What is the equivalent factored form of 12x4 – 42x3 – 90x2? 6x(x – 5)(2x + 3) 6x2(x – 5)(2x + 3) 6x(x + 5)(2x – 3) 6x2(x + 5)(2x – 3)

Question

01-03-2018
Mathematics

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What is the equivalent factored form of 12x4 – 42x3 – 90x2? 6x(x – 5)(2x + 3) 6x2(x – 5)(2x + 3) 6x(x + 5)(2x – 3) 6x2(x + 5)(2x – 3)

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zhaotianyu369 zhaotianyu369 · Answer 1 · 2018-03-01T19:35:57+01:00

zhaotianyu369 zhaotianyu369

01-03-2018

B. Factor out x^2 first. 12*x^4-42*x^3-90*x^2=(x^2)*(12*x^2-42*x-90). See that 6 is a common divisor of 12, 42, 90, so factor out 6: (6x^2)*(2*x^2-7*x-15).Then factor (2x^2-7x-15) as (2x+3)*(x-5). So the original expression=(6x^2)(2x+3)*(x-5)

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brissgypsyjazzy brissgypsyjazzy · Answer 2 · 2020-05-16T00:16:22+02:00

brissgypsyjazzy brissgypsyjazzy

16-05-2020

Answer:

B. 6x2(x – 5)(2x + 3)

Step-by-step explanation:

I got it right on Edge

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