1) (8x - 7)² = a² + 2 a b + b²
= (8x)² + 2*(8x)*(-7) + (-7)²
= 64x² - 112x + 49
2) (6x + 9)² = a² + 2 a b + b²
= (6x)² + 2*(6x)*(9) + (9)²
= 36x² + 108x + 81
3) (x + 1)² = a² + 2 a b + b²
= (x)² + 2*(x)*(1) + (1)²
= x² + 2x + 1
4) (x - 1)² = a² + 2 a b + b²
= (x)² + 2*(x)*(-1) + (-1)²
= x² - 2x + 1
5) (a + b)² = a² + 2 a b + b²
= (a)² + 2*(a)*(b) + (b)²
= a² + 2ab + b²
6) (a - b)² = a² + 2 a b + b²
= (a)² + 2*(a)*(-b) + (-b)²
= a² - 2ab + b²
7) (100x + 50)² = a² + 2 a b + b²
= (100x)² + 2*(100x)*(50) + (50)²
= 10.000x² + 10.000x + 2.500
8) (x + 2y)² = a² + 2 a b + b²
= (x)² + 2*(x)*(2y) + (2y)²
= x² + 4xy + 4y²
9) (7a - 5)² = a² + 2 a b + b²
= (7a)² + 2*(7a)*(-5) + (-5)²
= 49a² - 70a + 25
10) (4y + 12)² = a² + 2 a b + b²
= (4y)² + 2*(4y)*(12) + (12)²
= 16y² + 96y + 144
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1) (8x - 7)² = a² + 2 a b + b²
= (8x)² + 2*(8x)*(-7) + (-7)²
= 64x² - 112x + 49
2) (6x + 9)² = a² + 2 a b + b²
= (6x)² + 2*(6x)*(9) + (9)²
= 36x² + 108x + 81
3) (x + 1)² = a² + 2 a b + b²
= (x)² + 2*(x)*(1) + (1)²
= x² + 2x + 1
4) (x - 1)² = a² + 2 a b + b²
= (x)² + 2*(x)*(-1) + (-1)²
= x² - 2x + 1
5) (a + b)² = a² + 2 a b + b²
= (a)² + 2*(a)*(b) + (b)²
= a² + 2ab + b²
6) (a - b)² = a² + 2 a b + b²
= (a)² + 2*(a)*(-b) + (-b)²
= a² - 2ab + b²
7) (100x + 50)² = a² + 2 a b + b²
= (100x)² + 2*(100x)*(50) + (50)²
= 10.000x² + 10.000x + 2.500
8) (x + 2y)² = a² + 2 a b + b²
= (x)² + 2*(x)*(2y) + (2y)²
= x² + 4xy + 4y²
9) (7a - 5)² = a² + 2 a b + b²
= (7a)² + 2*(7a)*(-5) + (-5)²
= 49a² - 70a + 25
10) (4y + 12)² = a² + 2 a b + b²
= (4y)² + 2*(4y)*(12) + (12)²
= 16y² + 96y + 144