Answer: use x+4 to divide x³+2x²-23x-60
x² -2x-15
__________
x+4 √x³+2x²-23x-60
-(x³+4x²)
-2x²-23x-60
-(-2x²-8x)
-15x-60
-(-15x-60)
Factorize x²-2x-15
x²-5x+3x-15
x(x-5)+3(x-5)
(x-5)(x+3)
Step-by-step explanation:
To subtract integers, all you have to do is change the sign on the integer that is to be subtracted. If both signs are positive, then our answer will be positive. If both signs are negative, then our answer will become negative. If the signs are different then you are going to want to subtract the smaller absolute value from the larger absolute value.
<span>For example: 14 - (-8) = 14 + 8 = 22.</span>
Answer:
C
Step-by-step explanation:
negative exponent flips the fraction
4^2=16
x^2 becomes x^4
y becomes y^2
Step-by-step explanation:
2(20-4a)=6-a
40-8a=6-a
-8a+a=6-40
-7a=-34
-7a/-7=-34/-7
a=34/7 or 4.9
The answer is 44, to solve, add 39 to 5