Find the product of (x + 7)2.

x2 − 14x + 49

x2 + 14x + 49

x2 − 49

x2 + 49

Question

Find the product of (x + 7)2.

x2 − 14x + 49

x2 + 14x + 49

x2 − 49

x2 + 49

jim_thompson5910 · Answer

Hint: use the formula (A+B)^2 = A^2+2AB+B^2

anonymous · Answer

im trying to get awnsers not ways how to do it.

jim_thompson5910 · Answer

Well only trying to help, not just give you the answers every time. That's not the best way to learn.

anonymous · Answer

i just got a few questions to do then i can have a good grade and not fail my online school please :/

jim_thompson5910 · Answer

alright, why not try working it out and I'll help you along the way?

jim_thompson5910 · Answer

first off, what does (x+7)^2 mean?

anonymous · Answer

because i cant even do the very easyist of alg ... lol umm idk o.o

jim_thompson5910 · Answer

Anything squared is equal to that thing multiplied by itself, so x^2 = x*x and (x+7)^2 = (x+7)(x+7)

jim_thompson5910 · Answer

Now we FOIL out (x+7)(x+7)


(x+7)(x+7)

x*x + x*7 + 7*x + 7*7

x^2+7x+7x + 49

x^2+14x+49


So (x+7)(x+7) = x^2+14x+49


Practice with a few to get a better grasp on how FOILing works.