Question

Calcule o valor numérico da seguinte expressão algébrica.                                                                                                                         2x²-12.(x+10)-6     (x=2)

Answer 1

2x²-12.(x+10)-6  
2.(2)² -12.(2+10)-6
2.(4) -24 -120 -6
8  -150
-142

Answer 2

2.(2)²-12 .(2+10)-6 
2.(4) -12 .(12)-6
8-12 .(12)-6
-4.(12) -6
-48 - 6
-54.