Question

Factorise these please someone thanks

Answer 1

Answer:

12.

a.

i. (x-9)(x-3)

ii. x = 9 or 3

b. (y+10(y-10)

Step-by-step explanation:

12.

a.

i.

Two numbers that multiply to make 27 and add to make -12 are: -9 and -3.

Put into brackets so you have: (x-9)(x-3)

ii.

Consider each bracket as its own equation.

x-9=0

x=9

x-3=0

x=3

b.

Difference of two squares