Question

i will medal and fan you!

1.(–10x3 + 30x – 20) ÷ (–5x + 5)
2.(8m7 – 10m5) ÷ 2m3
3.(–6m9 – 6m8 – 16m6) ÷ (2m3)
these kinds of questions confuse the heck out of me please help and explain(:

Answer 1

is ur first question? .(–10x3 + 30x – 20) ÷ (–5x + 5) or else .(–10x2 + 30x – 20) ÷ (–5x + 5)?

Answer 2

@FullHouseSquidy

Answer 3

these are the questions. sorry i wrote them down wrong:
(-10x^3+30x-20) / -5x+5
(8m^7 – 10m^5) ÷ 2m^3
(–6m^9 – 6m^8 – 16m^6) ÷ (2m^3)

Answer 4

Let us try to do the first question.
Can u factorise (-10x^3+30x-20)?

Answer 5

no you cant

Answer 6

\(-10x^3+30x-20=-10x^3+3*10x-2*10\)
do u see anything common to all three terms?

Answer 7

10

Answer 8

right:) when u factor it out what remains?

Answer 9

-2^3+3-2?

Answer 10

oh wait its -z^3+3-2

Answer 11

\(-10x^3+3*10x-2*10=10(-x^3+3x-2)\)
getting it?

Answer 12

yeah i get that

Answer 13

good:)
Can u factorise -5x+5?

Answer 14

-5(x+1)

Answer 15

-5x+5=-5(x-1)

Answer 16

oh ok

Answer 17

\[\frac{ -10x^3+30x-20 }{ -5x+5 }=\frac{ -10(x^3-3x+2) }{ -5(x-1) }=\frac{ -5*2( x^3-3x+2) }{ -5(x-1) }\]
do u see anything common in both denominator and numerator?

Answer 18

the -5 and x?