Answer:
[tex](7+x)^2=x^2+14x+49[/tex]
Step-by-step explanation:
I'm guessing you are wanting to expand the expression?
[tex](7+x)^2=(7+x)(7+x)=(7)(7)+(7)(x)+(x)(7)+(x)(x)=49+7x+7x+x^2=x^2+14x+49[/tex]
