find the value of - p²+q² if p-q =6and p+q=14
Answers
Answered by
3
Solution :-
Provided :-
• p - q = 6
• p + q = 14
We have to find
• - p² + q² or - ( p² - q²)
Now as we know
• (a + b)(a - b) = a² - b²
→ (p + q)(p - q) = p² - q²
→ (6)(14) = p² - q²
→ 84 = p² - q²
So ,
→ - (p² - q²) = - (84)
→ q² - p² = -84
Answered by
1
- p - q = 6
- p + q = 14
- p²+q²
➤
➤4pq = 196 - 36
➤4pq = 160
➤
➤pq = 40
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