Question

Thòse who can to solve this i will salute u yar
Plz help by solving it

Answer 1

Answer:

Step-by-step explanation:

Answer

Put x=2 in the equation

2³+a2²+2b+5=23

= 8+4a+2b+5=23

=4a+2b+13 = 23

= 4a +2b= 10

Put x=-1

-1³+a-b+5=11

= -1 a -b +5 = 11

= a-b +4 =11

= a-b = 7

Multiply this equation by 4

4a - 4b = 28

Subtract both the equations

4a - 4a+2b +4b = -18

= 6b = -18

= b = -3

Put this value in any of the equations

a-b=7

a-(-3) = 7

a+3=7

a=4