Answer:
(7x-1)*(x-3)
7x^2−22x+3
break expression in groups:
(7x^2-x)+(-21x+3)
factor out "x" from (7x^2-x)
x(7x-1)
factor out -3 from (-21x+3)
-3(7x-1)
x(7x-1)-3(7x-1)
factor out the common terms <em>7x-1</em>
(7x-1)(x-3)
Answer:
(7x−1)(x−3)
Hope this helps!
The heat produced by current I is
H = I²R
where
R = resistance.
According to the formula, heat produced is proportional to the square of the current.
When a current of I = 2 amps is applied, the heat produced is
H = 10x³ + 80.
This heat includes heat due to a fixed current of 2 amps, and heat due to a variable current of x amps.
Because the heat produced is proportional to the square of the current, write the expressions as
H = (10x)*(x²) + 20*(2²)
The second term on the right is heat due to the fixed current of 2 amps, written as
20*(2²).
Therefore the fixed resistance is R = 20 ohms, and the square of the fixed current is 2².
The first term represents heat due to variable resistance, written as
(10x)*(x²).
Therefore the variable resistance is 10x, and the square of the variable current is x².
Answer:
The variable current is 10x.
Answer:
The answer is 36
Step-by-step explanation:
First solve in parenthesis; 4-1=3
Then multiply that by the 2 to get 6
Then raise that value by the square root of 6^2 = 36
