Answer:

Step-by-step explanation:
Given
x² - 3x
To make the expression a perfect square
add ( half the coefficient of the x- term )²
x² + 2( -
)x +
, thus
x² - 3x + 
= (x -
)² ← a perfect square
Answer:
141.37
Step-by-step explanation:
Answer:
the first one
Step-by-step explanation:
i did the test and got it right
Answer:
120 ÷ 3 = 40
Step-by-step explanation: