Mathematics, 01.07.2019 15:50 annethelusma25

How would you solve (3a-4)^2? according to my teacher the answer is (3(a-1))^2 = 9a^2 - 18 a + 9

Answers

Answer from: cassie2021

(3a - 4)^2 =
(3a - 4)(3a - 4) =
3a(3a - 4) - 4(3a - 4) =
9a^2 - 12a - 12a + 16 =
9a^2 - 24a + 16 <== I am not getting what ur teacher got

is the problem written correctly ?
Because (3a - 3)^2 = 9a^2 - 18a + 9

Answer from: Quest

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.

Answer from: Quest

true

step-by-step explanation:

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How would you solve (3a-4)^2? according to my teacher the answer is (3(a-1))^2 = 9a^2 - 18 a + 9...