Respuesta :
Answer:
- 64
Step-by-step explanation:
Given
50 - 3(x² - y) + x ← substitute x = 6, y = - 4 into the expression
= 50 - 3(6² - (- 4)) + 6 ← evaluate the parenthesis
= 50 - 3(36 + 4) + 6
= 50 - (3 × 40) + 6
= 50 - 120 + 6 ← evaluate from left to right
= - 70 + 6
= - 64
