Matemática, perguntado por jaguariude, 7 meses atrás

resposta da questao 1 e 2

Anexos:

Soluções para a tarefa

Respondido por JohanLiebert
0

Resposta:

1 -

a)

3x-2y\\\\3(3)-2(-2)\\\\9+4\\\\13

b)

a^{3}b-b^{2}\\\\(-1)^{3}(2)-(2)^{2}\\\\-1(2)-4\\\\-2-4\\\\-6

d)

x^2-3x+y\\\\(-2)^2-3(-2)-5\\\\4+6-5\\\\5

e)

(a+b)^2\\\\(5-3)^2\\\\(2)^2\\\\4

ou

(a+b)^2\\\\(5-3)^2\\\\25-15-15+9\\\\4

f)

\sqrt{2x+y}\\\\ \sqrt{2(-2)+8}\\\\\sqrt{-4+8}\\\\\sqrt{4}\\\\2

g)

(x+y)^2\\\\(-2-8)^2\\\\(-10)^2\\\\100

ou

(x+y)^2\\\\(-2-8)^2\\\\4+16+16+64\\\\100

h)

x^2+4x+5y\\\\1^2-4(1)+5(-2)\\\\2-4-10\\\\-12

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