7a2+0a-35=0

Multiply 0 by a.

7a2+0-35=0

Add 7a2 and 0.

7a2-35=0

7a2-35=0

Add 35 to both sides of the equation.

7a2=35

Divide each term in 7a2=35 by 7.

7a27=357

Cancel the common factor of 7.

Cancel the common factor.

7a27=357

Divide a2 by 1.

a2=357

a2=357

Divide 35 by 7.

a2=5

a2=5

Take the square root of both sides of the equation to eliminate the exponent on the left side.

a=±5

First, use the positive value of the ± to find the first solution.

a=5

Next, use the negative value of the ± to find the second solution.

a=-5

The complete solution is the result of both the positive and negative portions of the solution.

a=5,-5

a=5,-5

The result can be shown in multiple forms.

Exact Form:

a=5,-5

Decimal Form:

a=2.23606797…,-2.23606797…

Solve for a 7a^2+0a-35=0