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:

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk