stackpoolekrysp71si4
27.09.2019 •
Mathematics
Use the quadratic formula to solve 4x^2 + x - 1 = 0.
a. {.0.5, 0.7}
b. {-0.3, -0.1}
c. {0.2, 0.4}
d. {-0.6, 0.4}
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Ответ:
x = -1 ± √1^2 - 4()/2(4)
x = -1 ± √1+16/8
x = -1 ± √17/8
x = -1 ± 4.1/8
x = -1+4.1/8 = 3.1/8 = 0.4
x = -1-4.1/8 = -5.1/8 = -0.6
x = {-0.6, 0.4}
hope it : )
give brainliest
Ответ:
3.0.8
4.8
5.11.51
Step-by-step explanation: