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Please solve algebra questions

2 Answers

Step 1:

The quardratic equation is .

Write the equation in the form of .

Add 8 on each side.

.

Here , and .

Quadratic formula :

The solution of the quadratic equation in the form is .

Substitute , and in the quadratic formula.

(Substitute , and )

(Multiply)

(Simplify)

(Substitute )

(Simplify)

Therefore the solutions of the quadratic equation are .

Solution:

The solutions of the quadratic equation are .

Option is right choice.

answered Aug 7, 2015 by Anney Mentor
edited Aug 7, 2015 by Anney

(2)

Step 1:

The quardratic equation is .

Write the equation in the form of .

Here , and .

Quadratic formula :

The solution of the quadratic equation in the form is .

Substitute , and in the quadratic formula.

(Substitute , and )

(Multiply)

(Simplify)

(Substitute )

(Simplify)

()

(Take out common factors)

(Cancel common terms)

Therefore the solutions of the quadratic equation are .

Solution:

The solutions of the quadratic equation are .

Option is right choice.

answered Aug 7, 2015 by Anney Mentor

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