If x² - mx - 27 = 0, when x = 6, what is the value of m?

A.) 1.5

B.) 2

C.) 3.5

D.) 5

E.) 5.5

A.) 1.5

B.) 2

C.) 3.5

D.) 5

E.) 5.5

x² - mx - 27 = 0

6² - m(6) - 27 = 0 {substituted 6 for x}

36 - 6m - 27 = 0 {evaluated exponent}

9 - 6m = 0 {combined like terms}

9 = 6m {added 6m to each side}

m = 9/6 {divided each side by 6}

m = 1.5 {divided}

6² - m(6) - 27 = 0 {substituted 6 for x}

36 - 6m - 27 = 0 {evaluated exponent}

9 - 6m = 0 {combined like terms}

9 = 6m {added 6m to each side}

m = 9/6 {divided each side by 6}

m = 1.5 {divided}

**A.) 1.5****Ask Algebra House**