Question

22. Find the product: (7x-4)(7x-5)​

Answer 1

Explanation:

By using the identity III which states that (x + a)(x+b) = x^2 + (a+b)x + ab

Here, x = 7x , a = -4 and b = -5 .

(7x - 4)(7x - 5) = (7x)^2 + (-4 - 5)7x + (-4)(-5)

= 49x^2 - 63x + 20

Answer:

(7x-4)(7x-5) = 49x^2 - 63x + 20

Answer 2

(7x-4)(7x-5)
=49x^2-35x -28x -40
=49x^2 -63x -40

Hope it helps!!
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