Question

Copie e complete a tabela a seguir.
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Answer 1

Resposta:

(x+10) * (x-10) = 50

2x - 100

x = - 100/2

x = -50

(2m+1) * (2m-1) = 0,25

4m-1

x = -1/4

x = 0,25

(3+2r) * (3-2r) = -0,44

9-4r

x = -4/9

x = -0,44

y² - 64 = 32

y²+8y-8y-64

y(y+8)-8(y+8)

(y-8)*(y+8)

2y+64

x = 64/2

x = 32

16 - 81x2= 112

16(y-15) - 81(y+15)

(y-15) * (y+15)

2y + 225

y = 225/2

y = 122

4(y-10)- 4(y+10)

(y-10) * (y+10)

2y + 100

y = 100/2

y = 50