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Verified answer
3a.(x + 9)²
= (x)² + 2(x)(9) + (9)²
= x² + 18x + 81
3b.
(6 + 2y)²
= (6)² + 2(6)(2y) + (2y)²
= 36 + 24y + 4y²
3c.
(3p - 8)²
= (3p)² + 2(3p)(-8) + (-8)²
= 9p² - 48p + 64
(×+9)(×+9)
×^2 + 9× + 9× + 81
x^2 + 18× + 81
b. (6+2y)(6+2y)
36 + 12y + 12y + 4y^2
36 + 24y + 4y^2
sederhana : 9 + 6y + y^2
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