Question

x2+19x+90 find zero​

Answer 1

Step-by-step explanation:

x²+19x+90

using middle term split method

x²+15x+4x+90

x(x+15)+4(x+15)

(x+15)(x+4)

x take two values

-4, -15

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Answer 2

Given,

x² + 19x + 90 = 0

To find,

Zero of the equation.

Solution,

It can be seen clearly, that the given is a quadratic equation, that is,

x² + 19x + 90 = 0,

which is of the form

ax² + bx + c = 0.

The zeros or, solution to a quadratic equation can be found simply by the factorization method or by using the quadratic formula.

Using the factorization method for the given equation,

x² + 19x + 90 = 0

x² + 10x + 9x + 90 = 0

x(x + 10) + 9(x + 10) = 0

(x + 9)(x + 10) = 0

So from here, we can see that,

x = -9, and

x = -10.

Therefore, the zeros or, the solution to the quadratic equation (x² + 19x + 90 = 0) will be x = -9, -10.