y(80)=(x+4.648417404)(x-3.248417404)

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Solution for y(80)=(x+4.648417404)(x-3.248417404) equation:


Simplifying
y(80) = (x + 4.648417404)(x + -3.248417404)

Reorder the terms for easier multiplication:
80y = (x + 4.648417404)(x + -3.248417404)

Reorder the terms:
80y = (4.648417404 + x)(x + -3.248417404)

Reorder the terms:
80y = (4.648417404 + x)(-3.248417404 + x)

Multiply (4.648417404 + x) * (-3.248417404 + x)
80y = (4.648417404(-3.248417404 + x) + x(-3.248417404 + x))
80y = ((-3.248417404 * 4.648417404 + x * 4.648417404) + x(-3.248417404 + x))
80y = ((-15.1 + 4.648417404x) + x(-3.248417404 + x))
80y = (-15.1 + 4.648417404x + (-3.248417404 * x + x * x))
80y = (-15.1 + 4.648417404x + (-3.248417404x + x2))

Combine like terms: 4.648417404x + -3.248417404x = 1.4x
80y = (-15.1 + 1.4x + x2)

Solving
80y = -15.1 + 1.4x + x2

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Divide each side by '80'.
y = -0.18875 + 0.0175x + 0.0125x2

Simplifying
y = -0.18875 + 0.0175x + 0.0125x2

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