What number should be added to https://www.askmehelpdesk.com/image/svg xml;charset=utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2F www.w3.org%2F2000%2Fsvg%22%20xmlns%3Awrs%3D%22http %3A%2F%2Fwww.wiris.com%2Fxml%2Fcvs-extension%22%20height%3D%2222%22%20width%3D%2250%2 2%20wrs%3Abaseline%3D%2218%22%3E%3C!--MathML%3A%20%3Cmath%20xmlns%3D%22http%3A%2F%2Fwww. w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmsup%3E%3Cmi %3Ex%3C%2Fmi%3E%3Cmn%3E2%3C%2Fmn%3E%3C%2Fmsup%3E%3 Cmo%3E-%3C%2Fmo%3E%3Cmn%3E6%3C%2Fmn%3E%3Cmi%3Ex%3C%2Fmi%3 E%3C%2Fmath%3E--%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E %40font-face%7Bfont-family%3A'math1da40657c9fece7e48d30af42d3'%3Bsrc%3 Aurl(data%3Afont%2Ftruetype%3Bcharset%3Dutf-8%3Bbase64%2CAAEAAAAMAIAAAwBAT1MvMi7iBBMAAADMAAAAT mNtYXDEvmKUAAABHAAAADRjdnQgDVUNBwAAAVAAAAA6Z2x5ZoP i2VsAAAGMAAAAcmhlYWQQC2qxAAACAAAAADZoaGVhCGsXSAAAA jgAAAAkaG10eE2rRkcAAAJcAAAACGxvY2EAHTwYAAACZAAAAAx tYXhwBT0FPgAAAnAAAAAgbmFtZaBxlY4AAAKQAAABn3Bvc3QB9 wD6AAAEMAAAACBwcmVwa1uragAABFAAAAAUAAADSwGQAAUAAAQ ABAAAAAAABAAEAAAAAAAAAQEAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAACAgICAAAAAg1UADev96AAAD6ACWAAAAAAACAAE AAQAAABQAAwABAAAAFAAEACAAAAAEAAQAAQAAIhL%2F%2FwAAI hL%2F%2F93vAAEAAAAAAAABVAMsAIABAABWACoCWAIeAQ4BLAI sAFoBgAKAAKAA1ACAAAAAAAAAACsAVQCAAKsA1QEAASsABwAAA AIAVQAAAwADqwADAAcAADMRIRElIREhVQKr%2FasCAP4AA6v8V VUDAAABAIABVQLVAasAAwAwGAGwBBCxAAP2sAM8sQIH9bABPLE FA%2BYAsQAAExCxAAblsQABExCwATyxAwX1sAI8EyEVIYACVf2 rAatWAAAAAQAAAAEAANV4zkFfDzz1AAMEAP%2F%2F%2F%2F%2F WOhNz%2F%2F%2F%2F%2F9Y6E3MAAP8gBIADqwAAAAoAAgABAAA AAAABAAAD6P9qAAAXcAAA%2F7YEgAABAAAAAAAAAAAAAAAAAAA AAgNSAFUDVgCAAAAAAAAAACgAAAByAAEAAAACAF4ABQAAAAAAA gCABAAAAAAABAAA3gAAAAAAAAAVAQIAAAAAAAAAAQASAAAAAAA AAAAAAgAOABIAAAAAAAAAAwAwACAAAAAAAAAABAASAFAAAAAAA AAABQAWAGIAAAAAAAAABgAJAHgAAAAAAAAACAAcAIEAAQAAAAA AAQASAAAAAQAAAAAAAgAOABIAAQAAAAAAAwAwACAAAQAAAAAAB AASAFAAAQAAAAAABQAWAGIAAQAAAAAABgAJAHgAAQAAAAAACAA cAIEAAwABBAkAAQASAAAAAwABBAkAAgAOABIAAwABBAkAAwAwA CAAAwABBAkABAASAFAAAwABBAkABQAWAGIAAwABBAkABgAJAHg AAwABBAkACAAcAIEATQBhAHQAaAAgAEYAbwBuAHQAUgBlAGcAd QBsAGEAcgBNAGEAdABoAHMAIABGAG8AcgAgAE0AbwByAGUAIAB NAGEAdABoACAARgBvAG4AdABNAGEAdABoACAARgBvAG4AdABWA GUAcgBzAGkAbwBuACAAMQAuADBNYXRoX0ZvbnQATQBhAHQAaAB zACAARgBvAHIAIABNAG8AcgBlAAADAAAAAAAAAfQA%2BgAAAAA AAAAAAAAAAAAAAAAAAAAAuQcRAACNhRgAsgAAABUUE7EAAT8%3 D)format('truetype')%3Bfont-weight%3Anormal%3Bfont-style%3Anormal%3B%7D%3C%2Fstyle%3E%3C%2Fdefs%3E%3C text%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%224.5%22%20y%3D%2218% 22%3Ex%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2212.5%22%20y%3D%2211 %22%3E2%3C%2Ftext%3E%3Ctext%20font-family%3D%22math1da40657c9fece7e48d30af42d3%22%20f ont-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%2223.5%22%20y%3D%2218 %22%3E%26%23x2212%3B%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%2235.5%22%20y%3D%2218 %22%3E6%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2244.5%22%20y%3D%2218 %22%3Ex%3C%2Ftext%3E%3C%2Fsvg%3E to make it a perfect square?

Sounds like homework to me. We can help here, but won’t give you the answer. Tell us what you’ve done so far to solve the problem.

What is a perfect square? You can plug in any number for x. See what happens.