3 years ago

Solve 4r2 – 7 = 29. a. +-6 b. +-3 c. +-4 d. +-5

1 answer:

4 0

4r^2-7=29
+7 both sides
4r^2=36
÷4 both sides
r^2=9
square root both sides
r=+/-3 B

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