Question

The product of (2 +√ 3) (2 - √3) is (a) 4 (b) 1 (c) -1 (d) 0​

Answer 1

Answer:

( a - b ) ( a + b ) = a² - b²

The above expression completely fits in this equation:

Let’s substitute 2 with a: 2 = a and √3 with b: √3 = b

This will equate to 2²- ( √3 )²

The square exponent of (√3)² will cancel the under root and make it 3.

Squaring 2 will give you 4

∴ 4 - 3 = 1.

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