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Factorizing Quadratic Equations

Give exact and approx to three decimal places
x^2+12x+36=64

Thank you!

Solution Preview

I shall do this with two methods as I am not sure which you are familiar with.

We have

x^2 + 12x + 36 = 64

x^2 + 12x + 36 - 64 = 0

x^2 + 12x - 28 = 0

Method 1 Factorise to get
(x - 2)(x + 14)=0

so,
x - 2 = 0 and x + 14 = 0
This ...

Solution Summary

A quadratic equation is solved using two methods. The solution is detailed and well presented.

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