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Solve the equation 10 X square + 15 x minus 6 x minus 9 is equals to zeroa not equal to zero​

Answer»

ANSWER:

10 {x}^{2}  + 15x - 6x - 9 = 0 \\ 5x(2x + 3) - 3(2x + 3) = 0 \\ (5x - 3)(2x + 3) = 0 \\ 5x -  3= 0 \:  \: and \:  \: 2x + 3 = 0 \\ x = 3 \div 5 \:  \:  \:  \:  \: and \:  \: x =  - 3 \div 2



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