lelen2021
27.07.2019 •
Mathematics
For which equation does it make the most sense to solve by using the square root property? a 4x2−5=20 b x² + 2x + 1 = 0 c 2x2+3x=−3 d x^2+4x=−3
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Ответ:
Ответ:
x = 1.146 and x =7.854
Step-by-step explanation:
Use the quadratic formula
x = -b ± √b² -4ac
2a
-(-9) ±√81-36
2
9 ± √45
2