Question

What is the value of x + 5 if x = 10?
U
2.
What is the value of 5 - x if x = 1
=
3.
Find the value of 4x2 + 3 if x= 3
=
4
Find the value of x3 - 3x - 4 if x= -2
3x+2
11
5.
Evaluate
if x = 1, y = -1
57-3​

Answer 1

x=619 or 559

x+5x−5=10

⟹(x−5)(x+5x−5)=10(x−5)

⟹x+5=10x−50

⟹x+5+50=10x−50+50

⟹x+55−x=10x−x

⟹9x9=559