X⁴-14x²+45=0
(x²) ²-14x²+45=0
let y=x²
y²-14y+45=0
(y-9) (y-5) =0
y=9 or y=5
x²=9 or x²=5
x=±3 or x=±√5
Well first because in this equation the first value is less than one, we should multiply the whole equation by 3, so
<span>x/3= x+1/4
x=3x+3/4
now we should switch the values
3x+3/4=x
now subtract x from both sides
2x+3/4=0
now subtract 3/4 from both sides
2x=-3/4
now divide both sides by 2
x=3/8
So that's your answer!
</span>
Answer:
31,564
Step-by-step explanation:
82,062 - 50,498 = 31,564
So it's 2.5 inches, so it would be 15 miles, because 6+6+3=15.
Answer:
A and D
Step-by-step explanation:
Got it right :)
