Solve x^2+4=(x+1)(x+3)

$$x ^ { 2 } + 4 = ( x + 1 ) ( x + 3 )$$

Solve for x

$$x=\frac{1}{4}=0.25$$

Steps for Solving Linear Equation

Use the distributive property to multiply x+1 by x+3 and combine like terms.

$$x^{2}+4=x^{2}+4x+3$$

Subtract x^{2} from both sides.

$$x^{2}+4-x^{2}=4x+3$$

Combine x^{2} and -x^{2} to get 0.

$$4=4x+3$$

Swap sides so that all variable terms are on the left hand side.

$$4x+3=4$$

Subtract 3 from both sides.

$$4x=4-3$$

Subtract 3 from 4 to get 1.

$$4x=1$$

Divide both sides by 4.

$$x=\frac{1}{4}$$