Question

What number must be added to 4x²-12x to make it perfect square trinomia?

a.4
b.9
c.16
d.25

guyyss answer it plssss......
if you correct I mark you as a brainliest ty hehehhe​

Answer 1

Answer:

opt b) 9 Ans

Step-by-step explanation:

$4x ^{2} - 12x \: \: \: \: \: is \: given \: add \: y\\ we \: can \: write \: (2x) {}^{2} - (2 \times 2x \times y) + (y) {}^{2} \\ 2 \times 2x \times y = 12 x \\ y = 3 \\ (2x - 3) {}^{2} \: \\ y {}^{2} = 3 {}^{2} = 9 \: ans.$