Question

A)(×+3)²=
B)(2×+1)²=
C)(5×+3y)²=
D)(×⁴+2)²=

Answer 1

a)
= (x + 3)² 
= x² + 2.3x + 9
= x² + 6x + 9
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b)
= (2x + 1)²
= 4x² + 2.2x.1 + 1
= 4x² + 4x + 1
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c)
= (5x + 3y)²
= 25x² + 2.5x.3y + 9y²
= 25x² + 30xy + 9y²
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d)
= (x⁴+2)²
= x⁸ + 2.2.x⁴ + 4
= x⁸ + 4x⁴ + 4
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