Which equation is true? 9x2 – 25 = (3x – 5)(3x – 5) 9x2 – 25 = (3x – 5)(3x + 5) 9x2 – 25 = –(3x + 5)(3x + 5) 9x2 – 25 = –(3x + 5)(3x – 5)

is the right answer.

Step-by-step explanation:

The given expression is :

We can say that it is in the form of

is or a = 3x

is 25 or b = 5

Now, when we multiply we get

So, putting the values of a and b in to get the answer.

We can check this by multiplying both,

=

Therefore, option B is correct.

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.

step-by-step explanation: