Me quickly, the first person who answers gets brainlest

(my answer that's picked i feel like is wrong)

16x^2+24x+9

Rewrite 16x^2+24x+9 as(4x)^2+2*4x*3+3^2

=(4x)^2+2*4x*3+3^2

Apply perfect square formula: (a+b)^2=a^2+2ab+b^2

a=4x b=3

Your answer is (4x+3)^2

Im postive about this you will get it right i promise

(4x+3)^2

Step-by-step explanation:

To figure out if you chose the correct answer, work backwards. Take (16x + 3)(x+3) and distribute everything in.

Make arrows from the 16x to both parts in the second half. Then make arrows from the 3 to both parts of the second parenthesis. You now have to multiply these arrows. (This part is for visual learners.)

So, 16x * x     +      16x * 3     +      3 * x      +      3 * 3      =

16x(^2) + 48x  + 3x + 9

This answer would give you 16x (^2) +51x + 9.

So, that answer is not correct.

Let's test the other two, as well.

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

4x * 4x     +      4x * -3     +      3 * 4x      +      3 * -3      =

16x(^2) + -12x  + 12x + -9 =

Combine like terms:

16x(^2) + -12x  + 12x + -9 =

the -12x + 12x give you 0. That leaves you with 16x(^2) -9. So, that's not the answer.

Let's test the last one.

(4x+3)^2

If you write this out, you will have (4x+3)(4x+3).

Let's solve this.

4x * 4x     +      4x * 3     +      3 * 4x      +      3 * 3      =

16x(^2) + 12x  + 12x + 9 =

Combine like terms:

16x(^2) + 12x  + 12x + 9 =

16x(^2) + 24x + 9

That is the answer we need!

50-38=12

step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.