Solve the equations: 1.3x–2−(3.3x+5)=2x+1

1 answer:

5 0

Answer:

1.3x - 2 - (3.3x + 5) = 2x + 1

1.3x - 2 - 3.3x - 5 = 2x + 1

-2x - 7 = 2x + 1

-7 = 4x + 1

-8 = 4x

x = -2

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Mice21 [21]

S=2(4x+2x)+4x^2=4x^2+12x

4x^2+12x=7
4x^2+12x-7=0
D=12^2-4x4x(-7)=256
X1=(-12-16)/(2x4)=-3.5 impossible
X2=(-12+16)/(2x4)=0.5

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cestrela7 [59]

56 is the answer cause you use 7*8=56 so i hope that helps

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Andre45 [30]

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