Question

ײ–4=0 quadratic equation

Answer 1

Answer:

x²=4

√x=√4

x=2

Step-by-step explanation:

Answer 2

The roots of the given quadratic equation are; x = +2 and x = -2

GIVEN

x²-4 = 0

TO FIND

The roots of given quadratic equation.

SOLUTION

We can simply solve the above problem as follows;

We are given a quadratic equation;

x²-4 = 0

We can also write it is as;

x² - 2² = 0

Applying the formula;

a² - b² = (a+b)(a-b)

Therefore,

(x + 2)(x-2)

x + 2 = 0

x = -2

And,

x - 2 = 0

x = +2

Hence, The roots of the given quadratic equation are; x = +2 and x = -2

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