3x²+x-5=0
a = 3, b = 1, c= -5
-> ∆ ( delta ) = b²-4ac = 61 > 0
-> x1 =( -b+√∆ )÷ 2a =...
x2 = (-b-√∆)÷2a =...
p/s: do your teachers teach you how to use ∆ ( delta ) in maths calculation ? i live in europe and our teachers teach us that way. however, it is a rịght and fast way. you should learn it.
7 days I think sorry if I’m wrong
Answer:
50 degrees and 40 degrees
Step-by-step explanation:
50 degrees and 40 degrees
complimentary = add up to 90 degrees
5:4:9
50:40:90