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7nadin3 [17]
3 years ago
9

Factor Completely. 5x^2+40x-100

Mathematics
2 answers:
Volgvan3 years ago
8 0

Find the Greatest Common Factor (GCF)

GCF = 5

Factor out the GCF (Write the GCF first, then in parenthesis, divide each term by the GCF)

5(5x^2/5 + 40x/5 - 100/5)

Simplify each term in parenthesis

5(x^2 + 8x - 20)

Factor x^2 + 8x - 20

<u>= 5(x - 2)(x + 10)</u>

Gelneren [198K]3 years ago
6 0

Answer:

5(x+10)(x-2)

Step-by-step explanation:

To solve this problem, take 5 as a common factor of expression

5(x^2 +8x - 20)\\

Now look for two numbers that multiplied are equal to -20 and when you add both you get 8.

These numbers are 10 and -2.

Then we write the expression as:

5(x+10)(x-2)

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The inverse function is equal to f-1(x) = (x - 1)/3 and the value at f-1(6) is equal to 5/3.

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