Question

Factorise it : 4-8x+16x²​

Answer 1

Answer:

step1 - multiply the first number (4) and last number (16)

step2- take a lcm of them your lcm will be 2×2×2×2

step3- group them in two parts and use addition/subtraction to make your middle number(8) e.g (2×2)+(2×2)=4+4=8

step4-write 4+4 in place of 8 e.g 4-(4+4)×+16x²

step5-open bracket with minus and × e.g 4-4×-4×+16ײ=4(1-2×+4ײ)Ans