ok please help its review Simplify: 2x(4x2 - 3x - 9) and Multiply: 5xy(2x - y)

Question

ok please help its review   Simplify: 2x(4x2 - 3x - 9)    and    Multiply: 5xy(2x - y)

anonymous · Answer

@UnkleRhaukus could u help

unklerhaukus · Answer

$$2x(4x^2 - 3x - 9)$$$$=(2x\times4x^2)+(2x\times-3x)+(2x\times-9)$$
$$=\cdots$$

unklerhaukus · Answer

$$5xy(2x - y)=(5xy\times2x)+(5xy\times-y)=\cdots$$

anonymous · Answer

? 1 i think the answer is 8x3 - 3x2 - 9x

unklerhaukus · Answer

almost dont forget to multiply the 2 next to the x

anonymous · Answer

i dont understand

unklerhaukus · Answer

$$=(2x\times4x^2)+(2x\times-3x)+(2x\times-9)$$$$(8)x^3+(2\times-3)x^2+(2\times-9)x$$

anonymous · Answer

: 2x(4x2 - 3x - 9)
	A.	8x2 - 3x - 9
	B.	8x2 - 6x - 18
	C.	8x3 - 6x2 - 18x
	D.	8x3 - 3x2 - 9x

anonymous · Answer

Multiply: 5xy(2x - y)
	A.	10xy - 5xy
	B.	10x2y - 5xy2
	C.	10x2 - 5xy + 25y2
	D.	10x2 - xy + y2

unklerhaukus · Answer

simplify the terms in the bracket in my most recent line

anonymous · Answer

i dont get it