Question

please solve this question ​

Answer 1

Answer:

1. 288

2. 9680

Step-by-step explanation:

1. (27)² - (21)²

a² - b² = (a+b) (a-b)

Here, a= 27 and b= 21

So, = (27+21) (27-21)

=(48) (6)

=288

2. (99)² - (11)²

(a²-b²) = (a+b) (a-b)

Here, a= 99 & b = 11

So, = (99+11) (99-11)

=(110) (88)

= 9680

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