Factorization
a² + 2a -3
Answers
Answered by
0
Answer:
Let's factor a2+2a−3
a2+2a−3
The middle number is 2 and the last number is -3.
Factoring means we want something like
(a+_)(a+_)
Which numbers go in the blanks?
We need two numbers that...
Add together to get 2
Multiply together to get -3
Can you think of the two numbers?
Try -1 and 3:
-1+3 = 2
-1*3 = -3
Fill in the blanks in
(a+_)(a+_)
with -1 and 3 to get...
(a-1)(a+3)
Answer:
(a−1)(a+3)
Answered by
29
We have to factorize a² + 2a - 3
So, we will simply solve it by middle term spilit
So, we split a² + 2a -3 as a² - a + 3a - 3
We will take common and solve further
Thus,
⟹ a² - a + 3a - 3
⟹ a(a-1) + 3 (a-1)
⟹ (a + 3)(a - 1)
Thus, the final answer is (a + 3)(a - 1).
Steps Followed :-
- We will arrange it in sequence
- In this question, it's already in sequence so we dont need to to arrange here.
- Then we do middle term split & devide the terms.
- We finally took common in this
- Fianlly we got (a+3)(a-1), & hence solved.
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