Solve x2 + 3x + 4 = 0 using the Quadratic Formula. Select any solutions that apply.

x=−3±i√72x=-3±i72

Step-by-step explanation:

Write the problem as a mathematical expression.

x2+3x+4=0x2+3x+4=0

Use the quadratic formula to find the solutions.

−b±√b2−4(ac)2a-b±b2-4(ac)2a

Substitute the values a=1a=1, b=3b=3, and c=4c=4 into the quadratic formula and solve for xx.

−3±√32−4⋅(1⋅4)2⋅1-3±32-4⋅(1⋅4)2⋅1

Simplify.

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Simplify the numerator.

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x=−3±i√72⋅1x=-3±i72⋅1

Multiply 22 by 11.

x=−3±i√72

x=−3±i√72x=-3±i72

Step-by-step explanation:

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.

step-by-step explanation: