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प्रश्न
Simplify this expression and find its value if x = 3, a = −1, b = −2.
2a - 2b - 4 - 5 + a
योग
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उत्तर
2a - 2b - 4 - 5 + a on putting a = -1, b = -2 in the given equation
= 2a + a - 2b - 4 - 5
= 3a - 2b - 9
= 3 × (-1) - 2 (-2) - 9
= -3 + 4 - 9
= -8
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