Question

use suitable identity to get each of the following products:
1. (x+3) (x+3)
2.(6z-7) (6z+7)


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Answer 1

Step-by-step explanation:

1. (x + 3) (x + 3)

= (x + 3)²

= x² + 3² + (2 × x × 3)

= x² + 9 + 6x

2. (6z - 7) (6z + 7)

= (6z)² - (7)²

= 36z² - 49

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