use suitable identity to find theproduct (3-2x)(3+2x)
9+4x²
6-4x²
9-4x²
6+4x²
Answers
Answered by
0
Step-by-step explanation:
Answer
Correct option is
A
1
Given, (3−2x)(3+2x)(9+4x
2
).
We know, (a+b)(a−b) =(a
2
−b
2
).
Multiply by using direct method, we get,
(3−2x)(3+2x)(9+4x
2
) =[(3)
2
−(2x)
2
](9+4x
2
)
=(9−4x
2
)(9+4x
2
) =(9+4x
2
)(9−4x
2
).
Now, by using formula (a
2
−b
2
)=(a+b)(a−b), we get,
=((9)
2
−(4x
2
)
2
)
=81−16x
4
.
Hence, the statement is true.
Therefore, 1 is the correct answer.
Answered by
1
Answer:
9-4x²
Step-by-step explanation:
(3-2x)(3+2x)
= 9 +6x -6x -4x²
= 9-4x²
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