Answer:
Step-by-step explanation:
5x^2 - 2y.....x = 2 and y = 3
5(2^2) - 2(3) =
5(4) - 6 =
20 - 6 =
14 <===
Answer:
152£
Step-by-step explanation:
1. 1/3 of the coins is 255/3=85 85coins is worth 1£
2. 110 of the coins are worth 50p
3. to figure out hos many 20p coins
total number of coins - number of 1£ coins - number of 50p coins
255-85-110=60
60 of the coins are worth 20p
4 add everything togheter
85£ from first
110/2=55£ from second
60 coins are worth 20p
5 coins make 1£
60/5=12£
5. add everything 85+55+12=152£
There is no such real number!
a+b=-5
ab=625
a=-b-5
(-b-5)*b=625
-b^2-5b=625
b^2+5b+625=0
b=-5+-sqrt(25-2500)
This resulting in b as a complex number which means in the real numbers there is no such solutions!
Answer:
1.-9x^2
2.16x^4
3.x^2+4x
4.x^2+4x+4
5.x^2-x-12
6.x^4+2x^3-4x^2
Step-by-step explanation: