Answer:
a = -2.872 and 3.272
Step-by-step explanation:
Given the equation 5a^2-2a-47=0
Using the general formula;
a = 2±√2²-4(5)(-47)/2(5)
a = 2±√4+940/10
a = 2±√944/10
a = 2±30.72/10
a = 2-30.72/10 and 2+30.72/10
a = -28.72/10 and 32.72/10
a = -2.872 and 3.272
