Anumber multiplied by 8 divided by four gives 7 more than the number as a equation

The number is 7

Step-by-step explanation:

A number (x) multiplied by 8 = 8x divided by four gives;

8x ÷ 4 = 2x

The answer is seven more than the number i.e

2x = x + 7

2x - x = 7 , x = 7

So the number is 7.

16x^2+9

Step-by-step explanation:

Use the FOIL method

(3x3)=9

(3)(-4x)=(-12x)

(4x)(3)=12x

(4x)(-4x)=(-16x^2)

-16x^2-12x+12x+9

Combine like terms

-16x^2+9