2 years ago

Solve -4a² - 1/5b + 1/7cif a = 3, b = -5, c = -21

1 answer:

8 0

Answer:

Step-by-step explanation:

-4(3)² - 1/5(-5) + 1/7(-21)

-4(9) + 1 - 3

-36 + 1 - 3

-35 - 3 = -38

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2 years ago

Solve -4a² - 1/5b + 1/7cif a = 3, b = -5, c = -21​