Question

40+3x-x²factorise it​

Answer 1

hey dud

here is your answer

40 + 3x - x square

3x - x square = 40

2x square = 40

x = 40 ÷ 2

x = 20

Answer

hope it will help you

Answer 2

Answer:

x=-5 or 8

Step-by-step explanation:

x²-3x-40=0

x²-8x+5x-40=0

x(x-8)+5(x-8)=0

(x+5)(x-8)=0

by zero product rule

x+5=0 or x-8=0

x=-5 or x=8