Answer:
1. (3x - 2)(x + 5).
2. 2(x + 4)(x - 2).
3. (2x - 9)(2x + 9).
Step-by-step explanation:
1. f(x) = 3x^2 +13x -10
Try to factor by the ac method:
3 * -10 = -30
We need 2 numbers whose product is -30 and whose sum is + 13.
They are -2 and +15, so we write:
3x^2 + 15x - 2x - 10 Factor by grouping:
= 3x(x + 5) - 2(x + 5)
= (3x - 2)(x + 5).
2. f(x) = 2x^2+4x-16
= 2(x^2 + 2x - 8)
Now we need 2 numbers whose product is -8 and whose sum is + 2.
They are +4 and -2. So:
= 2(x + 4)(x - 2).
3. 4x^2 - 81 This is the difference of 2 squares so the factors are:
(2x - 9)(2x + 9).
Answer:
The answer is 14.6
Step-by-step explanation:
3^2+4^3/2+3
=9+64/5
=73/5
=14.6
Therefore the answer is
14.6
I hope that this has satisfied you.
Answer:
75%
Step-by-step explanation:
$16 = 100%
$12 = ?%
?% = (12 * 100) / 16
?%= 75%
Answer:
x^2+6x+9
(x+3)^2
Step-by-step explanation:
A Venn diagram is characterized by a group of circles to represent the classification of objects. For this condition, the circle representing the cars is found inside the circle representing motor vehicles. This is because all cars are motor vehicles. So cars is just a part of the motor vehicles along with other kinds. The Venn diagram is shown in the picture attached.