Question

X+2Y=40 3X-2Y=10.
5X-Y=25 X-2Y=30

ayudaaa​

Answer 1

Respuesta:

Equation:

Solution for x^2+kx+16=0 equation:

Simplifying

x2 + kx + 16 = 0

Reorder the terms:

16 + kx + x2 = 0

Solving

16 + kx + x2 = 0

Solving for variable 'k'.

Add '-16' to each side of the equation.

16 + kx + -16 + x2 = 0 + -16

Reorder the terms:

16 + -16 + kx + x2 = 0 + -16

Combine like terms: 16 + -16 = 0

0 + kx + x2 = 0 + -16

kx + x2 = 0 + -16

Combine like terms: 0 + -16 = -16

kx + x2 = -16

Add '-1x2' to each side of the equation.

kx + x2 + -1x2 = -16 + -1x2

Combine like terms: x2 + -1x2 = 0

kx + 0 = -16 + -1x2

kx = -16 + -1x2

Divide each side by 'x'.

k = -16x-1 + -1x

Simplifying

k = -16x-1 + -1x

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2x-2=8 x-3=5 3x+2=18 2x+10=12 6x-2=14 3x=12 4x-2=12 9x-3=6 12+x=5 x+8=13 all equations