Answer:27
Step-by-step explanation:
3 x 3 x 3
Answer:
10x . . . . . (Note the sign of the middle term is negative. 10x goes in the box.)
Step-by-step explanation:
The sum of the two roots is ...
... (5 -3i) +(5 +3i) = 10
In a quadratic with leading coefficient 1, the coefficient of the 1st-degree term is the opposite of the sum of the roots. Here, that means the middle term is -10x. The minus sign is given, so the answer is 10x.
_____
<em>How Do We Know?</em>
When "a" and "b" are roots of a quadratic in x, it has factors (x -a)(x -b). The product of those two factors is ...
... (x -a)(x -b) = x² -(a+b)x +ab
Here, that means the product of the factors (5 -3i)(5 +3i) is ab = 34, which it is. Their sum is (a+b) = 10, so the x-term is -(a+b)x = -10x.
Answer:
x = 21
Step-by-step explanation:
3x = 16 * 4 = 64
x = 64/3
x = 21
Answer: x=-2
Step-by-step explanation:
To solve for x, we want to isolate x.
-4(11x+2)=80 [distribute]
-44x-8=80 [add both sides by 8]
-44x=88 [divide both sides by -44]
x=-2
Now, we know that x=-2.
Answer:
The answer is A-8(pi) in^2
Step-by-step explanation:
