Question

Alguem sabe me responder ?Todos .
a) (x+2y)²
b) (x²+1)²
c) (2m³+n)²
d) (4p+5q)²

Answer 1

a)
= (x+2y)²
= x² + 2.x.2y + 4y²
= x² + 4xy + 4y²
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b)
= (x²+1)²
= x⁴ + 2.1.x² + 1²
= x⁴ + 2x² + 1
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c)
(2m³+n)²

4m⁶ + 2.2m³.n + n²
 
         6             3
= 4m      + 4m   n + n²
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d)
= (4p + 5q)²

= 16p² + 2.4p.5q + 25q²

= 16p² + 40pq + 25q²