Question

Are the two expressions equivalent when x=2 7^2+4x 4x+(7×7)

Answer 1

`Give\ Two\ expressions\ are\ equivalent.`

Explanation:

`First\ expression=7^2+4x\\\\At\ x=2,\ value\ of\ first\ expression=7^2+4* 2=49+8=57\\\\Second\ expression=4x+(7* 7)\\\\Second\ expression=4x+7^2\ \ \ \ \ \ \ \ \ \ \ as\ m* m=m^2\\\\Second\ expression=7^2+4x\ \ \ \ \ \ \ \ using\ commutative\ property\ of\ addition\\\\At\ x=2,\ value\ of\ second\ expression=7^2+4* 2=49+8=57\\\\Hence\ these\ two\ expressions\ are\ equivalent.`