Simplify (2√2 - 5)² + (3√2 + √3)² - (√2 - 1)²
SUPER URGENT!!!!! PLEASE!!!!!
Answers
Answered by
62
(2√2-5)²=33-20√2 by( a-b)²=a²-2ab+b²
(3√2+√3)²=21+6√6 by (a+b)²=a²+2ab+b²
(√2-1)²=3-2√2 by (a-b)²=a²-2ab+b²
=(33-20√2)+(21+6√6)-(3-2√2)
=33-20√2+21+6√6-3+2√2
=51-18√2+6√6
(3√2+√3)²=21+6√6 by (a+b)²=a²+2ab+b²
(√2-1)²=3-2√2 by (a-b)²=a²-2ab+b²
=(33-20√2)+(21+6√6)-(3-2√2)
=33-20√2+21+6√6-3+2√2
=51-18√2+6√6
Answered by
30
[ (2√2)² - 2*2√2*5 + 25 ] + [ (3√2)² + 3 + 2*3√2*√3 ] - [ (√2)² - 2 √2 *1 + 1²]
8 - 20 √2 + 25 + 18 + 3 + 6 √6 - 2 + 2√2 - 1
26 + 6 √6 - 18 √2
8 - 20 √2 + 25 + 18 + 3 + 6 √6 - 2 + 2√2 - 1
26 + 6 √6 - 18 √2
Similar questions