How do you solve
2xsquared + 3× −3 = 0
using the quadratic formula?
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1
Answer:
0.685 OR -2.185
Step-by-step explanation:
2x² + 3x - 3 = 0
a (co-efficient of x²) = 2
b (co-efficient of x) = 3
c (constant) = -3
b²-4ac = 3² - (4×2×-3)
= 9 - (-24)
= 9 + 24
= 33
√(b² - 4ac) = √33 = 5.74
x = [-b ± √(b² - 4ac)] / 2a
= (-3 ± 5.74) / 4
= (-3 + 5.74)/4 OR (-3 - 5.74)/4
= 2.74/4 OR -8.74/4
= 0.685 OR -2.185
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