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4 years ago

What is the quadratic formula

Mathematics

1 answer:

natka813 [3]4 years ago

7 0

I can give you an example:
4x^2+2xy-3y^2

it is in the form of :
x^2+2ax+a^2
also : (x+a)^2 = x^2+2ax+a^2

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Dafna11 [192]

Answer:

<h2>✎ ANSWER:-</h2>

$y = 2x - 5$

Substitute the value of y as 2x - 5 in the equation.

$5x - 4y = - 10 \\ 5x - 4(2x - 5) = - 10 \\ 5x - 8x + 20 = - 10 \\ 5x - 8x = - 10 - 20 \\ - 3x = - 30 \\ x = \frac{ - 30}{ - 3} \\ x = 10$

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