प्लीज गिव मी आंसर फास्ट फर्स्ट नंबर
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1. 4x–5 = 4(5)–5
= 20–5
= 15
2. 5x+6 = 5(5)+6
= 25+6
= 31
3. 6x+8 = 6(5)+8
= 30+8
= 38
4. 6x²+2x+3 = 6(5)²+2(5)+3
= 150+13
= 163
5. 4x²+x+8 = 4(5)²+5+8
= 100+5+8
= 113
6. 7x³+4x+8x = 7(5)³+4(5)+8(5)
= 7(125)+20+40
= 935.
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