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lisabon 2012 [21]
3 years ago
11

A

Mathematics
1 answer:
motikmotik3 years ago
3 0

Answer:

50

Step-by-step explanation:

180-(x+80) + 180-(2x+20) = 180 -70

180-x-80 + 180-2x-20 = 110

100-x + 160-2x = 110

260 - 3x = 110

-3x = -150

x = <u>50</u>

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4x2 - 12x + 9 can be factored as (2x - 3)(2x - 3)<br><br> True<br><br> False
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Answer:

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Step-by-step explanation:

Factor the following:

4 x^2 - 12 x + 9

Factor the quadratic 4 x^2 - 12 x + 9. The coefficient of x^2 is 4 and the constant term is 9. The product of 4 and 9 is 36. The factors of 36 which sum to -12 are -6 and -6. So 4 x^2 - 12 x + 9 = 4 x^2 - 6 x - 6 x + 9 = 2 x (2 x - 3) - 3 (2 x - 3):

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Factor 2 x - 3 from 2 x (2 x - 3) - 3 (2 x - 3):

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