3 years ago

Help me please on the wrong answers (C means correct)

Mathematics

2 answers:

yan [13]3 years ago

7 0

The answer for 3 is 5 7/8

Ulleksa [173]3 years ago

3 0

For number 6 it is d

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Answer:

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Step-by-step explanation:

Hello, please consider the following.

$6x^3+18x^2-240x=6x(x^2+3x-40)\\\\\text{** The sum of the zeroes is -3=-8+5 and the product is -40=-8*5. **}\\\\\text{** So, we can factorise. **}\\\\6x^3+18x^2-240x=6x(x^2+3x-40)=6x(x^2+8x-5x-40)\\\\=6x(x(x+8)-5(x+8))\\\\\large \boxed{=6x(x+8)(x-5)}$

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