Question

Using identities find the product

(3x – 5) (3x + 8)​

Answer 1

Answer:

9x^2 + 9x - 40

Step-by-step explanation:

(3x-5) (3x+8)

=3x(3x+8) -5(3x+8)

=9x^2 + 24x - 15x - 40

=9x^2 + 9x - 40

Identity used: (x+a)(x+b)

=x^2 + (a+b)x + ab

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