Math, asked by taniyaa55, 1 year ago

3. If the quadratic expression x2 + (a - 4)X + (a + 4) is a perfect square, then a =
(A) O and -4
(B) 0 and 6
(C) 0 and 12
(D) 6 and 12

Answers

Answered by nibhatulsyan123

2

0$12 see explained in pic.

Attachments:

taniyaa55: how the second line 2×√(a+4)=a-4 comes?

nibhatulsyan123: see we made a+4 = √a+4 ^2

nibhatulsyan123: so according to identity

taniyaa55: ok thank you

nibhatulsyan123: welcome

nibhatulsyan123: please select as brainliest

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