Question

a² - 6a + 72
factorise pls I will mark as brainliest.​

Answer 1

Answer:

Let's solve your equation step-by-step.

a2−6a+72=0

For this equation: a=1, b=-6, c=72

1a2+−6a+72=0

Step 1: Use quadratic formula with a=1, b=-6, c=72.

a=

−b±√b2−4ac

2a

a=

−(−6)±√(−6)2−4(1)(72)

2(1)

a=

6±√−252

2