Question

(a-b)(a+b)=

Answer 1

a^2 + b^2

Answer 2

a * a = a^2 and b * b = b^2

since this is the furthest we can add the two together (since we do not know the real values for either a or b) the answer we can get is a^2 * b^2

does this help?

Answer 3

it would be adding a^2 and b^2, not multiplying.

Answer 4

@T.Josh.01 are you sure?

Answer 5

Using FOIL method (firstxfirst, firstxouter, innerxFirst, innerxLast) you get

a^2 + ab -ab + b^2

ab and -ab cancel out

leaving a^2 + b^2

or am i mistaken??

Answer 6

@shoplovepc
i know what it is! the b^2 would be negative, therefore subtracted from a^2.
so the final answer would be
a^2 - b^2

Answer 7

@T.Josh.01 that makes sense :)

Answer 8

a^2 and because + and - cancel each other then b^2 so a^2 + b^2

Answer 9

sorry frdz correct answer of (a-b)(a+b) is a^2-b^2 this is difference formula