Question

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Answer 1

have to use FOIL (first, outer, inner last)

Answer 2

so for:

(2x-1)(2x+6)

the first terms are 2x and 2x

2x * 2x = ?

Answer 3

4x?

Answer 4

almost

what is x * x?

Answer 5

x^2

Answer 6

good so 2x * 2x = 4x^2

now we move to the inner terms: -1 and 2x

-1 * 2x = ?

Answer 7

-2x

Answer 8

good, now the outer terms

2x * 6 = ?

Answer 9

12x

Answer 10

good, then the last terms are just -1 * 6 = -6

so adding everything together

x^2 + 12x - 2x - 6 = x^2 + 10x - 6 --> answer for part 1

Answer 11

x^2 + 12x - 2x - 6 = x^2 + 10x - 6
is the answer?

Answer 12

yes

Answer 13

alright

Answer 14

so for part 2:

(2x-1)(2x+6) and (1x-2)(6+2x)

do you think these two products are equal?

Answer 15

no?

Answer 16

good, since 1x - 2 isn't equal to 2x - 1 the two products can't be equal, even though 2x + 6 and 6 + 2x are equal

Answer 17

and that's it

Answer 18

thank you