2x^2 + 3x + 8 = 0
Answer: B) -3 + I √55 over 4.
Step-by-step explanation:
=>x⁴-5x²+4
=>x⁴-x²-4x²+4
=>x²(x²-1)-4(x²-1)
=>(x²-1)(x²-4)
=>(x+1)(x-1)(x+2)(x-2)
hope this helps you.
C = children
a = adults
12c + 15a = 33456 (price)
c + a = 2450 (people)
c = 2450 - a (rewrite^)
12(2450 - a) + 15a = 33456 (substitute into the price equation)
29400 - 12a + 15a = 33456
3a = 4056
<u>a = 1352
</u>c = 2450 - (1352)
<u>c = 1098</u>
1098 children
1352 adults
