Answer:
I got 70% hope it helps man
C is wrong...............
2x^2 - 2x - 40 = 2x^2 -10x + 8x - 40 = 2x(x - 5) + 8(x - 5)
= (x-5)(2x+8) = 2(x-5)(x+4)
He / she didn’t drop down the 2 after subtracting 19 from 242, instead he / she dropped down a 0.
answer for 9 is 6cm not sure about 10
