Math, asked by sakshamdutta999, 3 months ago

solve using suitable identity (i)(6x-7)(6x-7) (ii)(4x+5)(4x-5)

Answers

Answered by nayanamadhu20

1

Step-by-step explanation:

(6x-7)(6x-7)= (6x-7)²=(6x)²-2×7×6x+(7)²=36x²-84x+49

(4x+5)(4x-5)=(4x)²-(5)²=16x²-25

Answered by parishmitag53

2

Step-by-step explanation:

6x^2 -2.6x.7+7^2 (Formula = (a-b)^2 = a^2 -2ab+b^2)
36x^2 -84 +49 is the required ans for the first que.(i)
4x^2 -5^2 ( Formula = a^2 -b^2=( a+b) (a-b)
16x^2 -25 is the ans for que (ii)

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