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The value of the product (4a^(2)+3b)(9b^...

The value of the product `(4a^(2)+3b)(9b^(2)+4a)` at `a=1, b=-2` is

A

60

B

`-80`

C

70

D

`-50`

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • The product of 4a^(2),-6b^(2) and 3a^(2)b^(2) is

    A
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    `2a -3b`
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    `2a + 3b`
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    `3b`

  • Value of (4a ^(2) + 12 ab + 9b ^(2)) //(2a + 3b) is

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    `2a - 3b`
    B
    `2 a + 3b`
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    `2a`
    D
    `3b`

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