Answer:
(-2, -2)
Step-by-step explanation:
step-by-step.
x
3
+10=15
Step 1: Simplify both sides of the equation.
1
3
x+10=15
Step 2: Subtract 10 from both sides.
1
3
x+10−10=15−10
1
3
x=5
Step 3: Multiply both sides by 3.
3*(
1
3
x)=(3)*(5)
x=15
Answer:
x=15
Answer:
2278
Step-by-step explanation:
Answer:
x³ + 2x² - 19x - 20
Step-by-step explanation:
x + 1 = 0
x = -1
Substitute x = (-1) in the polynomial
x³ + 2x² - 19x - 20 = (-1)³ + 2*(-1)² - 19 *(-1) - 20
= -1 + 2 +19 - 20
= -1 - 20 + 2 + 19
= -21 + 21 = 0
So, (x + 10 ix a factor of x³ + 2x² -19x - 20
