If the problem want rational coefficient, then u need additional zero -1-√5 so you will expand a polynomial
(x+2)(x-2)²(x-1-√5)(x-1+√5). otherwise not necessary ie
(x+2)(x-2)²(x-1-√5).
$28,855/3,145=9.17
9.17 is the decrease percentage in the price of the car.
UW = 45
a squared + b squared = c squared
- 6^2 + x^2 = 9^2
- 36 + x = 81
- (subtract 36 from both sides)
- x = 45
i'm pretty sure this is right and i hope it helps you!
Answer
p/q = 8/6
Make p the subject
p = 8q/6........equation 1
This year the price was reduced by 4
p-4/q-4 = 7/5
Cross multiple
5(p-4) = 7(q-4)
5p-20 = 7q-28
5p - 7q = -8 .......equation 2
Sub 8q/6 for p in equation 1
5(8q/6) - 7q = -8
Multiply through by 6
40q-42q=-48
-2q=-48
q=24
Sub 24 for q in equation 1
p= 8(24)/6
p= 192/6
p= 32.....
Check the answer for confirmation.
Thanks.
