English, asked by mm0574414, 7 months ago

25x² + 30x + 7 = 0.
solve the quadratic equation
do not solve by formula..​

Answers

Answered by VedicLord
2

25x { }^{2}  + 30x + 7 = 0 \\ 25x {}^{2}  + 30x + 9 - 2 = 0 \\ (5x + 3) {}^{2}  - ( \sqrt{2) {}^{2} }    = 0 \\ (5x + 3 -  \sqrt{2} )(5x + 3 +  \sqrt{2) }  = 0 \\ x =  \frac{ \sqrt{2} - 3 }{5}  \: or \:     \frac{ -  \sqrt{2} - 3 }{5}

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