Question

Find the product of (x + 7)^2.
Is the answer x^2 + 49 ?
@jim_thompson5910

Answer 1

@eSpeX @radar

Answer 2

no, that's a very common misconception

Answer 3

(x + 7)^2 = (x+7)(x+7)

distribute or use FOIL to expand

Answer 4

I forgot how to do the Foil thingy > . <

Answer 5

FOIL = first, outer, inner, last

Answer 6

FOIL

F: multiply first terms: x*x = x^2
O: multiply outer terms: x*7 = 7x
I: multiply inner terms: 7*x = 7x
L: multiply last terms: 7*7 = 49

then you add/combine like terms

x^2 + 14x + 49

Answer 7

Oh, Thanks ^_^

Answer 8

yw