(3x-2)(3x+2)-(2x-5)(8x-3)=4x-19
9х²-6х+6х-4-(16х²-40х-6х+15)=4х-19
9х²-6х+6х-4-16х²+40х+6х-15=4х-19
-7х²+42х=0
-7х(х-6)=0
-7х=0 х-6=0
х=0 х=6
Ответ: х1=0
х2=6
9x^2 -4 -(16x^2-6x-40x+15)=4x-19
9x^2-4-16x^2+46x-15-4x+19=0
-7x^2 +42x=0
-7x*(x-6)=0
-7x=0
x=0
x-6=0
x=6
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Answers & Comments
(3x-2)(3x+2)-(2x-5)(8x-3)=4x-19
9х²-6х+6х-4-(16х²-40х-6х+15)=4х-19
9х²-6х+6х-4-16х²+40х+6х-15=4х-19
-7х²+42х=0
-7х(х-6)=0
-7х=0 х-6=0
х=0 х=6
Ответ: х1=0
х2=6
9x^2 -4 -(16x^2-6x-40x+15)=4x-19
9x^2-4-16x^2+46x-15-4x+19=0
-7x^2 +42x=0
-7x*(x-6)=0
-7x=0
x=0
x-6=0
x=6