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Aleksandr [31]
4 years ago
15

Factor completely. 5x^2 + 10x - 40

Mathematics
2 answers:
Gala2k [10]4 years ago
6 0

Answer:

5(x + 4)(x - 2)

Step-by-step explanation:

Start by factoring 5 out of all three terms.  We then have

5(x^2 + 2x - 8), or

5(x^2 + 2x - 8), which is in proper quadratic form.

Note that (4)(-2) = 8 and that 4 - 2 = 2, which match the 3rd and 2nd coefficients of x^2 + 2x - 8.

Thus, in completely factored form, we have 5(x + 4)(x - 2)

lesya692 [45]4 years ago
3 0

Answer:

5 (x -2) (x +4)

Step-by-step explanation:

5x^2 + 10x - 40

Factor out a 5

5(x^2 +2x-8)

We can then factor inside the parentheses

What two numbers multiply to -8 and add to 2

-2*4 = -8

-2+4 = 8

5 (x -2) (x +4)

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<u>Answer:</u>

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<u>Step-by-step explanation:</u>

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

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