What is the answer to x+8=x+8^2+7(x+8)+4 ?

The answer to x+8=x+8^2+7(x+8)+4 is x=-116/7

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x+8=x+8^2+7(x+8)+4

x + 8 = x + 8^{2} + 7 (x + 8) + 4

x = - \frac{116}{7}

Decimal Notation

x = - 16.57142 \dots

Solution steps

x + 8 = x + 8^{2} + 7 (x + 8) + 4

Subtract

x

from both sides

x + 8 - x = x + 8^{2} + 7 (x + 8) + 4 - x

Simplify

8 = 8^{2} + 7 (x + 8) + 4

Switch sides

8^{2} + 7 (x + 8) + 4 = 8

8^{2} = 64

64 + 7 (x + 8) + 4 = 8

Move

64

to the right side

7 (x + 8) + 4 = - 56

Move

4

to the right side

7 (x + 8) = - 60

Divide both sides by

7

x + 8 = - \frac{60}{7}

Move

8

to the right side

x = - \frac{116}{7}

- 4 x^{2} + 16 = 0

- 4 < 2 - 3 (x + 2) < 11

4 x = 30

2 + 5 (3 b + 9) - b

x^{2} + 17 x + 42 = 0

What is the answer to x+8=x+8^2+7(x+8)+4 ?
The answer to x+8=x+8^2+7(x+8)+4 is x=-116/7
Solve for x: x+8=x+8^2+7(x+8)+4
The solution is x=-116/7