the real solutions for the equation are -
Step-by-step explanation:
=
= 0
We can write 64 as
+ = 0
using the identity ( )
we get,
=
= ....................(1)
solving the quadratic equation ,
=0
solutions of this quadratic equation can be obtained by
let use y for factors
<u /> ..................(2)
from the equation 1 we have,
which gives solution
and from equation 2 we got
so the real solutions for the equation are -
(3.49+4.71)1.80=cost
(8.2)1.80=cost
14.76=cost
Luis spends $14.76 all together
Divide 3 from both sides to get a=57/3 then a=19