Determine x-intercepts and zeros of each function

Given:

The function is:

To find:

The x-intercepts and zeros of the given function.

Solution:

We have,

For x-intercepts, .

Using zero product property, we get

and

and

and

and

The given function has two equal zeroes or x-intercept, i.e., .

Therefore, the zeroes are 2 and 2.

Note: All options are incorrect.

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

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answer