What are the solutions to the equation factor x^2+4x-21=0 ?

The solutions to the equation factor x^2+4x-21=0 are x=3,x=-7

Find the zeros of factor x^2+4x-21=0

The zeros of factor x^2+4x-21=0 are x=3,x=-7

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

x^{2} + 4 x - 21 = 0

x = 3, x = - 7

Solution steps

x^{2} + 4 x - 21 = 0

Factor

x^{2} + 4 x - 21 : (x - 3) (x + 7)

(x - 3) (x + 7) = 0

Using the Zero Factor Principle:

ab = 0

then

a = 0

b = 0

x - 3 = 0 or x + 7 = 0

Solve

x - 3 = 0 : x = 3

Solve

x + 7 = 0 : x = - 7

The solutions to the quadratic equation are:

x = 3, x = - 7

2 x^{2} + 12 x + 8

6 w^{2} - 26 w + 5 = w^{2}

5 x^{2} = - 28 x + 12

2 x^{2} + 4 x = 30

8 x^{2} = 2

What are the solutions to the equation factor x^2+4x-21=0 ?
The solutions to the equation factor x^2+4x-21=0 are x=3,x=-7
Find the zeros of factor x^2+4x-21=0
The zeros of factor x^2+4x-21=0 are x=3,x=-7