Question

Find by using identitiy:
(3x + 5)2 - ( 3x - 5)2​

Answer 1

Answer:

60x

Step-by-step explanation:

by using the following identity

$(a + b) {2} - (a - b) {2} = 4ab$

a= 3x

b= 5

putting the value of a and b in 4ab:

= 4×a×b

= 4×3x ×5

= 60x

Answer 2

Answer:

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