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Crmchscoblessiemariego
Answered

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Sagot :

AV18go

Answer:

1) -17

2) -14

3) 6

4) 73

5) - 25/6

6) -5/2

Step-by-step explanation:

1) 3x³+7y²-4z

1) 3x³+7y²-4z=3(-2)³+7(1) - 4(0)

1) 3x³+7y²-4z=3(-2)³+7(1) - 4(0)= 3(-8) + 7 - 0

1) 3x³+7y²-4z=3(-2)³+7(1) - 4(0)= 3(-8) + 7 - 0= -24 + 7

1) 3x³+7y²-4z=3(-2)³+7(1) - 4(0)= 3(-8) + 7 - 0= -24 + 7= -17

2) 8ab + 3bc - 12

= 8(1)(-1) + 3(-1)(2) - 12

= -8 + 6 - 12

= -14

3) 3c - 5z²

= 3(2) - 5(0)²

= 6 - 0

= 6

4) 16(a-b)²+9(x+y)²

= 16(1+1)²+9(-2+1)²

= 16(2)²+9(-1)²

= 16(4)+9(1)

= 64+9

= 73

6) 3(1) - 7(-1) / 2(1) + 6(-1)

= - 5/2

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