Me with this. its a timed homework question i only have 20 mintues

7^17

Step-by-step explanation:

(7^5 * 7^3)^4 = 7^32

7^32 * 7^-2 = 7^30

7^-7 * 7^20 = 7^13

7^30 / 7^13 = 7^17

Look up indices laws to revise this.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.