Answers

2015-01-26T18:58:18+05:30
It is 47 said in following expression
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2015-01-26T20:19:26+05:30
5x²-4-3x²+6x+8+5x-13
= 5(-2)²-4-3(-2)²+6×(-2)+8+5(-2)-13
= 5×4-4-3×4+(-12)+8+(-10)-13
= 20-4-12-12+8-10-13
= 28-51
= -23
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