The resulting expression on factorization by grouping method is (3-7x²)(x-3).
<h3>What is Factorization?</h3>
Factorization is a method in which an Integer or an expression is written in terms of product of its fractions.
The expression given in the question is
–7x³ + 21x² + 3x – 9
This equation has to be factorized using grouping method.
group of two or more is formed and common term is taken out.
-7x² (x -3) +3(x-3)
( -7x²+3) (x-3)
(3-7x²)(x-3)
The resulting expression on factorization by grouping method is
(3-7x²)(x-3).
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The answer is (a)..........
need more details to answer please post the question with more details
Answer:
y = (-16t-2)(t-1)
To find the zeros, let's set y = 0 and separate these two expressions in parenthesis with the zero product property.
0 = -16t-2
0 = t-1
Now let's solve for t and get two zeros.
0 = -16t-2
2 = -16t
<u>t = -1/8</u>
0 = t-1
<u>t = 1</u>
1. Our two zeros are t = -1/8 and t = 1.
2. The two zeros are not both meaningful! Remember that this is modeling time, and we don't really care about -1/8 seconds. We don't need that negative time measurement, so we just want to know what's happening at 1 second. And at one second, the ball is on the ground. Great, so we know that height of ball = 0 after 1 second.
