Substitute x=1.5 into the expression:
(14-1.5)(14+1.5)+(1.5+6)²
Simplify:
(12.5)(15.5)+(7.5)²= 193.75 + 56.25= 250
Therefore, the value of the expression when x=1.5 is 250.
Substitute x=1.5 into the expression:
(14-1.5)(14+1.5)+(1.5+6)²
Simplify:
(12.5)(15.5)+(7.5)²
= 193.75 + 56.25
= 250
Therefore, the value of the expression when x=1.5 is 250.