tolong bantu ya jangan lupa kasih caranya

[tex]2x ^{2} - 3x - 7 = 0 \\ a = 2 \\ b = - 3 \\ c = - 7 \\ \\ (x1 + x2) ^{2} - 2x1x2 \\ = ( \frac{ - b}{a} ) ^{2} - 2( \frac{c}{a} ) \\ = ( \frac{3}{2} ) ^{2} - 2( \frac{ - 7}{2} ) \\ = \frac{9}{4} + 7 \\ = \frac{9 + 28}{4} \\ = \frac{37}{4} [/tex]

Jawaban : d. 37/4

Maaf Kalau Salah