<h2>
For a = 1 and b = 10 x+1 and x+2 factors of x³-ax²-bx-8 = 0</h2><h2>
Other factor is (x-4)</h2>
Step-by-step explanation:
We have
x³-ax²-bx-8 = 0
Its factors are x+1 and x+2
That is x = -1 and x = -2 are its roots
Substituting x = -1
(-1)³-a(-1)²-b(-1)-8 = 0
-1 - a + b - 8 = 0
b - a = 9 ---------------------eqn 1
Substituting x = -2
(-2)³-a(-2)²-b(-2)-8 = 0
-8 - 4a + 2b - 8 = 0
2b - 4a = 16 ---------------------eqn 2
eqn 1 x -2
-2b + 2a = -18 ---------------------eqn 3
eqn 2 + eqn 3
-2a = -2
a = 1
Substituting in eqn 1
b - 1 = 9
b = 10
For a = 1 and b = 10, x+1 and x+2 factors of x³-ax²-bx-8 = 0
The equation is x³-x²-10x-8 = 0
Dividing with x + 1 we will get
x³-x²-10x-8 = (x+1)(x²-2x-8)
Dividing (x²-2x-8) with x + 2 we will get
x²-2x-8 = (x+2)(x-4)
So we have
x³-x²-10x-8 = (x+1)(x+2)(x-4)
Other factor is (x-4)
The income of the man in discuss as in the task content is; rs 10,200.
<h3>What is the income of the man?</h3>
Since, it follows that 100 paisas make one rupee. This insinuates that the income tax rate which corresponds to 5 paisa per rupee is; 5%.
Hence, the amount earned by the man in discuss can be evaluated as follows;
(5/100) × Income = 510
Hence, Income = 510/0.05 = rs 10,200.
Read more on percentages;
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140+500(10)
Multiply 500 times 10 which leaves you with 5000. Add 140 and the answer is 5140
Answer:
$21.15
Step-by-step explanation:
6 x 1.15 = 6.9 (because we're working with money, we'll add a zero at the end for the ones place) = 6.90
15/5 = 3 then 3 x 4.75= 14.25
14.25 + 6.90 = 21.15
Hope this helped <3
Answer:
The answer is D
Step-by-step explanation:
Begin by disturbing the exponent amongst the equation.
Answer: ( 64g^9 h^6 k^12)
Then do division
( 64g^9 h^6 k^12) / 8g^3 h^2= (8g^6 h^4 k^12)
Distribution of exponent
(h^5 k^3)^5 = (h^25 k^15)
Put the answers together
(8g^6 h^4 k^12) - (h^25 k^15)
That's the answer, hope it helps!
