Question

Use a suitable identity to find the product.
(b−7)(b−7)

Answer 1

Answer:

Please see the explanation

Step-by-step explanation:

(b-7)(b-7)

(b-7)²

b² - 2*(7)*(b) + 7²

b² - 14b + 49

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Answer 2

Answer:

To find the product of (x + 8)(x – 10)

We know that

(x + a)(x + b) = x2 + (a + b)x + ab

In the expression (x + 8)(x – 10)

a = 8

b = -10

a + b = 8- 10 = -2

ab = 8 × (-10) = – 80

Substitute the values in the above equation

(x + 8)(x – 10) = x2 + (8 – 10)x + 8 × (-10)

(x + 8)(x – 10) = x2 – 2x – 80