Subtract from .

Rewrite as .

Rewrite as .

Rewrite as .

Subtract from both sides of the equation.

Reorder and .

To remove the radical on the left side of the equation, square both sides of the equation.

Multiply the exponents in .

Apply the power rule and multiply exponents, .

Cancel the common factor of .

Cancel the common factor.

Rewrite the expression.

Simplify.

Simplify .

Rewrite as .

Expand using the FOIL Method.

Apply the distributive property.

Apply the distributive property.

Apply the distributive property.

Simplify and combine like terms.

Simplify each term.

Multiply by .

Move to the left of .

Multiply .

Raise to the power of .

Raise to the power of .

Use the power rule to combine exponents.

Add and .

Raise to the power of .

Raise to the power of .

Use the power rule to combine exponents.

Add and .

Rewrite as .

Rewrite as .

Use to rewrite as .

Apply the power rule and multiply exponents, .

Combine and .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Evaluate the exponent.

Multiply by .

Subtract from .

Subtract from .

Reorder and .

Move all terms not containing to the right side of the equation.

Subtract from both sides of the equation.

Subtract from .

Reorder and .

Multiply each term in by

Multiply each term in by .

Multiply .

Multiply by .

Multiply by .

Simplify .

Apply the distributive property.

Multiply.

Multiply by .

Multiply by .

Solve for z square root of 15-z+6 = square root of 4-9