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dsp73
2 years ago
15

Identify the interval(s) on which the function y = x^2-3x-40 is positive

Mathematics
1 answer:
MakcuM [25]2 years ago
3 0

Answer:

See below

Step-by-step explanation:

x^2-3x-40  Factor

(x - 8) (x + 5)

The x intercepts are -5 and 8

(negative infinity, -5)

(8, positive infinity)

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1. Simplify both sides

−6n=−5−5n

−6n=−5+−5n

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2. Add 5n to both sides

−6n+5n=−5n−5+5n

−n=−5

3. Divide both sides by -1.

−n /−1 = −5 /−1

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So the variable n, is equal to 5

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