Question

factorise for -4x²+32x-56=0 i will mark brainliest​

Answer 1

Answer:

5.414 and 2.586

Step-by-step explanation:

4x^2 - 32x + 56 = 0

x^2 - 8x + 14 = 0

a = 1, b = - 8, c = 14

D = b^2 - 4ac = 64 - 56 = 8

Roots = (- b +/-  √D) / 2a

Thus Roots = (8 +/-  √8)/2 = 4 +/- √2

as  √2 = 1.414

Roots will be

4 + 1.414 = 5.414 & 4 - 1.414 = 2.586

Roots are 5.414 and 2.586