Jika a = -2,b =4, dan c = -5. Maka nilai 2a – 5b + c² adalah

Diketahui:

• a = -2
• b = 4
• c = -5

Ditanya:

• 2a – 5b + c²

Jawaban:

2a – 5b + c²

= 2(-2) – 5(4) + (-5)²

= (2 × (-2)) – (5 × 4) + ((-5) × (-5))

= -4 – 20 + 25 ✓

Apabila dioperasikan:

-4 – 20 + 25

= – (20 + 4) + 25

= -24 + 25

= 1 ✓

Jawaban:

a = -2

b = 4

c = -5

2a – 5b + c²

2(-2) – 5(4) + (-5)²

-4 – 20 + 25

-24 + 25

1