### Still have math questions?

Ask our expert tutors
Algebra
Question

6. $$( 2 x - 4 ) ( x - 5 )$$

7. $$( x + 4 ) ( x ^ { 2 } + 3 x + 2 )$$

Simplify the following expressions 9. $$5 ( 2 x ^ { 2 } + 3 x + 3 x ( x + 5 )$$

10.

$$7 m - 4 + 2 ( 3 m + 2 )$$

$$\left. \begin{array} { l } { \text { 6. } ( 2 x - 4 ) ( x - 5 ) } = 2x^2- 10x- 4x+ 20= 2x^2- 14x+ 20\\\\ { \text { 7. } ( x + 4 ) ( x ^ { 2 } + 3 x + 2 ) } = x^3+ 3x^2+ 2x+ 4x^2+ 12x+ 8= x^3+ 7x^2+ 14x+ 8\\ \\{ \text { Simplify the following expressions } }\\\text{ 8.} 5x^2+ 3x+ 3x(x+ 5)= 5x^2+ 3x+ 3x^2+ 15x= 8x^2+ 18x\\\\ { \text { 9. } 5 ( 2 x - 3)+ x(3x)}= 10x- 15+ 3x^2 \\ \\{ \text { 10. } } { 7 m - 4 + 2 ( 3 m + 2 ) }= 7m- 4+ 6m+ 4= 13m \end{array} \right.$$