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ehidna [41]
3 years ago
12

The sum of 15x^2 + 3x - 4 and 5x - 4 is..?

Mathematics
2 answers:
Nutka1998 [239]3 years ago
3 0

Answer: 15x^2 + 8x - 8

Step-by-step explanation:

1) Add them together

(15x^2 + 3x - 4) + (5x - 4)

2) Combine like terms

15x^2 + 8x - 8

Dennis_Churaev [7]3 years ago
3 0

Answer:

15x^2+8x-8

Step-by-step explanation:

when asking for the sum of 2 polynomials, the question is simply asking you to add like terms

15x^2 (nothing to add so this stays the same)

3x+5x=8x

-4+(-4)=-8

add the bolded terms to get

15x^2+8x-8

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4 years ago
What is the factored form of this expression? 4t2 − 27t + 18
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Answer:

(4t − 3) (t − 6)

Step-by-step explanation:

Using AC method:

Given a quadratic ax² + bx + c, find factors of ac that add up to b.  Divide those factors by a and reduce.  The denominators become the coefficients and the numerators become the constants.

Here, a = 4, b = -27, and c = 18.

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