Question

Tolong dibantu yang opsi e ...terima kasih

Answer 1

3y²-2y-2 = 0
a= 3
b =-2
c= -2

x₁₂ = -b +/-√(b²=4ac) / 2a
x₁₂ = -(-2) +/- √((-2)² - 4.3(-2)) / 2.3
x₁₂ = 2 +/- √(4+24) / 6
x₁₂ = 2 +/- 2√7 / 6

x1 = 2+2√7 / 6 = (1+√7)/3
x2 = 2-2√7 / 6 = (1-√7)/3