Question

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Answer 1

As respostas estão em negrito

a) (2x+y)² =(2x)²+2(2x)(y)+(y)² = 4x²+4xy+y²

b) (a+3)² = (a)²+2(a)(3)+(3)² = a²+6a+9

c) (a+4b)² = (a)²+2(a)(4b)+(4b)² = a²+8ab+16b²

d) (2x+3y)² = (2x)²+2(2x)(3y)+(3y)² = 4x²+12xy+9y²

✨ Espero ter ajudado ✨

15/07