f(x)=(x+1)(x+1)-4

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Solution for f(x)=(x+1)(x+1)-4 equation: 


Simplifying
f(x) = (x + 1)(x + 1) + -4

Multiply f * x
fx = (x + 1)(x + 1) + -4

Reorder the terms:
fx = (1 + x)(x + 1) + -4

Reorder the terms:
fx = (1 + x)(1 + x) + -4

Multiply (1 + x) * (1 + x)
fx = (1(1 + x) + x(1 + x)) + -4
fx = ((1 * 1 + x * 1) + x(1 + x)) + -4
fx = ((1 + 1x) + x(1 + x)) + -4
fx = (1 + 1x + (1 * x + x * x)) + -4
fx = (1 + 1x + (1x + x2)) + -4

Combine like terms: 1x + 1x = 2x
fx = (1 + 2x + x2) + -4

Reorder the terms:
fx = 1 + -4 + 2x + x2

Combine like terms: 1 + -4 = -3
fx = -3 + 2x + x2

Solving
fx = -3 + 2x + x2

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by 'x'.
f = -3x-1 + 2 + x

Simplifying
f = -3x-1 + 2 + x

Reorder the terms:
f = 2 + -3x-1 + x

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