22
actually 4
but i know this is a joke
Answer:
+ 1
Step-by-step explanation:
Given
x² + 2x
Using the method of completing the square
add ( half the coefficient of the x- term)² to x² + 2x
= x² + 2(1)x + 1²
= x² + 2x + 1
= (x + 1)² ← perfect square
Answer:
238
Step-by-step explanation:
280 times 0.85 = 238
80 cm^2 i think this your answer