Factorise the 2 questions above (c and f)

5x² - 50x + 120

Factor out the LCF which is 5

We have

5( x² - 10x + 24)

Write 10x as a difference

That's

5( x² - 6x - 4x + 24)

Simplify

Factor the expression

5 [ x ( x - 6) - 4( x - 6) ]

Factor out x - 4 from the expression

We have the final answer as

2x² - 6x - 260

Factor out 2 from the expression

That's

2 ( x² - 3x - 130)

Write 3x as a difference

That's

2 ( x² + 10x - 13x - 130)

Factorize the expression

2 [ x ( x + 10) - 13 ( x + 10) ]

Factor out x + 10 from the expression

We have the final answer as

Hope this helps you

c

step-by-step explanation:

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.