Question

use and suitable indentity and solve (4b² +9) (4b² + 7)​

Answer 1

Answer:

8 be+16

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I hope t

Answer 2

Answer:

$\left(4b^2+9\right)\left(4b^2+7\right)\\= 4b^2\cdot \:4b^2+4b^2\cdot \:7+9\cdot \:4b^2+9\cdot \:7\\= 4\cdot \:4b^2b^2+4\cdot \:7b^2+9\cdot \:4b^2+9\cdot \:7\\= 16b^4+64b^2+63$

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