# Which equation is true?

Some newly school question and answer inquired students to tell what they think is the most crucial important concern for a student to do to be able to gain success. Of many responses, the one that that stood out was practice. Successful persons generally are not born successful; they become successful by hard work and determination. This is how you can reach your goals. beneath are one of the answer and question example that you could certainly utilise to practice and expand your information and also give you insights that would guide you to maintain your study in school.

## Question:

Which equation is true?

9×2 – 25 = (3x – 5)(3x – 5)
9×2 – 25 = (3x – 5)(3x + 5)
9×2 – 25 = –(3x + 5)(3x + 5)
9×2 – 25 = –(3x + 5)(3x – 5)

EXPLANATION

We want to factor

Observe that, both
and are perfect squares.

Thus,

and

We need to rewrite the expression as a difference of two squares to obtain,

We apply the difference of two squares formula which is given by,

By comparing this to our expression we let

Then our expression can now be factored as,

Therefore the correct option is B.

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