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प्रश्न
Simplify:
−4x2 + {(2x2 − 3) − (4 − 3x2)}
उत्तर
−4x2 + {(2x2 − 3) − (4 − 3x2)}
We will first remove the innermost grouping symbol ( ) and then { }.
∴ −4x2 + {(2x2 − 3) − (4 − 3x2)}
= −4x2 + {2x2 − 3 − 4 + 3x2}
= −4x2 + {5x2 − 7}
= −4x2 + 5x2 − 7
= x2 − 7
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