Question

evaluate -(-49-a2)-5a2​

Answer 1

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♧Question♧

• evaluate - ( - 49 -.a²) - 5a²

♧Answer♧

• ➠ - ( - 49 - a²) - 5a²
• ➠49 + a² - 5a²
• ➠49 - 4a²
• ➠(7 - 2a) (7 + 2a)

☆Concept used:-

• ➠a² - b² = (a - b)(a + b)

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