What is the answer to (x^2-4x-21)/(x+3)=0 ?

The answer to (x^2-4x-21)/(x+3)=0 is x=7

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(x^2-4x-21)/(x+3)=0

\frac{x ^{2} - 4 x - 21}{x + 3} = 0

x = 7

Solution steps

\frac{x ^{2} - 4 x - 21}{x + 3} = 0

Simplify

\frac{x ^{2} - 4 x - 21}{x + 3} : x - 7

x - 7 = 0

Move

7

to the right side

x = 7

Verify Solutions

Find undefined (singularity) points:

x = - 3

Combine undefined points with solutions:

x = 7

x = \frac{3 x}{x ^{2} + 1}

22.75 = \frac{1000}{x}

h, b = \frac{m}{h ^{2}}

\frac{6 x ^{2} - 16}{3 x} = 12 + 2 x

\frac{6}{x} = \frac{42}{63}

What is the answer to (x^2-4x-21)/(x+3)=0 ?
The answer to (x^2-4x-21)/(x+3)=0 is x=7
Solve for x: (x^2-4x-21)/(x+3)=0
The solution is x=7