Anonymous

Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -3x2 + 7x + 6?

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John McCann Profile
John McCann answered

Use the quadratic formula.

X = - b (+/-) sqrt[b^2 -4ac]/2a

a = - 3

b = 7

c = 6

X = - 7 (+/-) sqrt[7^2 - 4(- 3)(6)]/2(- 3)

X = - 7 (+/-) sqrt[49 + 72]/- 6

X =[ - 7(+/-) 11]/- 6

X = - 2/3

X = 3

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Anonymous