Question

5×ao quadrado- 3×_2=0

Answer 1

5x² - 3x - 2 =0

a=5       b=-3        c=-2

Δ=b² -4ac
Δ=(-3)²-4(5)(-2)
Δ=9 + 40
Δ= 49
√Δ=√49
√Δ=±7

x=(-b±√Δ)/2a =  [-(-3)±7]/2(5)]=   (3 ± 7 )/10

x'=(3+7)/10=10/10 = 1

x"= (3 - 7 )/10 = -4/10  = -2/5