esmech3120 esmech3120

06-09-2020
Mathematics

contestada

Solve -4a² - 1/5b + 1/7c

if a = 3, b = -5, c = -21

Respuesta :

meredith48034 meredith48034

07-09-2020

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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