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If (a2 – b2) = 30, a – b = 6 then, what is the value of a + b?1. 72. 93. 54. 12 |
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Answer» Correct Answer - Option 3 : 5 Given: (a2 – b2) = 30 a – b = 6 Formula required: (a + b)(a – b) = a2 – b2 Calculations: (a + b) × 6 = 30 ⇒ (a + b) = 30/6 ⇒ (a + b) = 5 ∴ The value of (a + b) is 5 |
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