Question

ME AJUDEM POR FAVOOOORRRRRRR



Efetue as adições algébricas
a) 20xy- 17xy - 15 xy
b) 20ab + 1,5ab - 2,3ab
c) 10wz - 15wz - 20wz + 5 wz
$d) \: - {x}^{2} {y}^{3} - {x}^{2} {y}^{3} + {2x}^{3} {y}^{3} + {5x}^{2} {y}^{3}$


2) Efetue as operações solicitadas


$a) \: {a}^{2}. {a}^{3}$
$b) \: ( - 5 {x}^{2}y).( - 10xy$
$c) \: ( - ac).( + 2 {a}^{4}b$
$d) \: (40 {x}^{7} {y}^{2} ) \div ( - 10 {x}^{4} {y}^{2} )$
$e) \: (2 {x}^{2} )^{5}$









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Answer 1

Resposta:

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Answer 2

1-

a) 20xy-32xy = -12xy

b) 21,5xy-15xy = +6,5xy

c) 15wz-35wz = 20wz

d) -2x²y³+7x²y³ = +5x²y³

2-

a) a⁵

b) +50x³y²

c) -2a⁵bc

d) -4x³

e) 32x¹⁰

Espero ter ajudado ✨

13/07