Question
If (m + n) = 9 and mn = 14, then find the value of (m²
+ n²).Solution
According to the question,
(m + n) ² = 9²
⇒ m² + n² + 2mn = 81
⇒ m² + n² + 2(14) = 81
⇒ m² + n² + 28 = 81
⇒ m² + n² = 81 – 28 = 53
More Algebra Questions
436 × 794 – 68210 =? + 85730
520% of 360 – 12% of 400 = ? x 4
236.23 - 653.23 + 696.23 = ?
{(? × 15) + (? × 45)} – 120 = 360
What will come in the place of question mark (?) in the given expression?
(437 + ? - 167) x 2.5 = 875800 + 900 X (3)-2 - ? = 25 X 60 ÷ 2Â
37% of 810 – 32% of 460.5 = ?
- What will come in place of (?) in the given expression.
(⅗ of 450) – (⅖ of 300) = ? 1024 ÷ 16 + 800 ÷ √64 + ? = 200 * 2
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