Question

ДОПОМОЖІТЬ ДАЮ 50 БАЛІВ
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Answer 1

Ответ:вот

Объяснение:

Answer 2

$\displaystyle\bf\\4x^{2} -7x-2=0\\\\D=(-7)^{2} -4\cdot 4\cdot (-2)=49+32=81=9^{2} \\\\\\x_{1} =\frac{7-9}{8} =-\frac{2}{8} =-\frac{1}{4} =-0,25\\\\\\x_{2} =\frac{7+9}{8} =\frac{16}{8} =2\\\\\\Otvet \ : \ -0,25 \ ; \ 2$