Question

using this above identity ☝️(picture)
solve
(3x+4) (3x-5)
answer- __
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Answer 1

Answer:

$(3x + 4)(3x - 5) \\ = 3x(3x - 5) + 4(3x - 5) \\ = 9 {x}^{2} - 15x + 6x - 20 \\ = 9 {x}^{2} - 9x - 20$

Answer 2

Answer:

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Step-by-step explanation:

(3x+4)(3x−5)

=3x(3x−5)+4(3x−5)

=9x

2

−15x+6x−20

=9x

2

−9x−20