Question

1. Use suitable identities to find the following products
(iii) (3x +4)(3x – 5)
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Answer 1

Answer:

Pic pls

Step-by-step explanation:

Distributive property of multiplication

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Answer 2

Step-by-step explanation:

in this question we can use the following identity:

$(x + a)(x + b) = x^{2} + (a + b)x + ab$

here x is 3x

a is 4

b is -5

hence,

$3x ^{2} + ( - 1)3x + (4) \times ( - 5)$

$9 {x}^{2} - </em></strong><strong><em>3</em></strong><strong><em>x - 20$

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