Question

1.3x+4=
2.16
_ =
а

3.b-5
_ =
8
4. 2
_=
x²+1

5. 3
_=
x²-1​

Answer 1

1)13/10x+4

10/1×(13х+40)

4.2 x^2-1^2

(х-1)×(x+1)