1. X² + 3X – 4 =0 (pemfaktoran) 2. X² + 7X + 10 = 0 (rumus ABC) Tolong………

By Admin ReiPosted on December 2, 2022

1. X² + 3X – 4 =0 (pemfaktoran) 2. X² + 7X + 10 = 0 (rumus ABC) Tolong………

Jawaban:

${x}^{2} + 3x - 4 \ (x + 4)(x - 1) \ x = - 4 \ x = 1$

${x}^{2} + 7x + 10 \x1.2 = frac{ - 7 frac{ + }{ - } sqrt{49 - 4(1)(10)} }{ 2} \ = frac{ - 7 frac{ + }{ - } sqrt{9} }{2} \ = - frac{ - 7 frac{ + }{ - }3 }{2} \ x = frac{ - 7 + 3}{2} = - 2 \ x = frac{ - 7 - 3}{2} = - 5$