What identity can be used to rewrite the expression 4x^2 -9

(2x)^2 - (3)^2 = (2x - 3)(2x + 3)

a^2 - b^2 = (a -b)(a +b). This is called "difference of squares identity."

Step-by-step explanation:

The given expression is

We have to use the identity a^2 - b^2 = (a -b)(a +b). This is called "difference of squares identity."

We can write 4x^2 = (2x)^2 and 9 = (3)^2

So we can write the given expression as (2x)^2 - (3)^2

Using the difference of squares identity, we can factor it as

(2x)^2 - (3)^2 = (2x - 3)(2x + 3)

d) 48

step-by-step explanation:

16,32,48,64,80,96,112,128,144,160,176,192,208,224,240,256,272,288,304,320,336

so the rectangle is 80cm (area)

now to find the area of a triangle.

base times height.

4 times 8.

your answer is 96cm.

hope this .