Question

The product of (a + b)(a − b) is a2 − b2.

Sometimes

Always

Never

Answer 1

@SOS101
Can you multiply these?
\[(a+b)\times (a-b)\]

Answer 2

no because they are only variables , am i right?

Answer 3

we can multiply variables
\[x\times x=x^2\]
\[x\times y = xy\]

Answer 4

Oh lol sorry im not to good with these things

Answer 5

So a^2 and b^2

Answer 6

So would this be always @ash2326

Answer 7

Could you multiply and check, what would you get?

Answer 8

a^2 and b^2 but im not sure if i subtract them

Answer 9

@SA5UK3

Answer 10

Im not entirley getting the question

Answer 11

Let's multiply and check
\[(a+b)\times (a-b)\]
\[=>\]
\[a\times (a-b)+b\times (a-b)\]
Do you agree with this?

Answer 12

Its a difference of squares.

Answer 13

So its always true

Answer 14

Yes I agree and @SA5UK3 Ohhhh