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प्रश्न
Evaluate: 2x(3x – 5) – 5(x – 2) – 18 for x = 2.
बेरीज
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उत्तर
For x = 2
2x(3x – 5) – 5(x – 2) – 18
2 × 2(3 × 2 − 5) − 5(2 − 2) − 18
4(6 − 5) − 5 × 0 − 18
4 − 18
= − 14
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