Question

Simplify as far as possible without a calculator. ( 3 − √ 7 ) ( 3 − √ 7 )

Answer 1

Answer:

Use Identity (a - b)^2 = a^2 + b^2 + 2ab

Step-by-step explanation:

( 3 − √ 7 ) ( 3 − √ 7 ) = 3^2 + (√7)^2 + 2(3)(√7)

= 9+7+6√7 = 16+ 6√7