-3x^2 + 4xy - y^3 x = 5 and Y = 1

-56

Step:

Plug in the numbers into the equation

-3(5)² + 4(5)(1)-1³

Any expression multiplied by 1 remains the same. Evaultuate the power.

-3×25+4×5-1³

Multiply the numbers. 1 raised to any power equals 1.

-3×25+20-1

Multiply the numbers

-75+20-1

Calcualte the sum or difference and you get -56.

Hope this helpsʕ•ᴥ•ʔ

ion

step-by-step explanation:

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x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x