KarateKat
22.11.2020 •
Mathematics
Find the value of c that completes the square
x^2+2x+c
Please help me with how to do this, and show me. Thank you.
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Ответ:
c = 1
Step-by-step explanation:
Given
x² + 2x + c
To complete the square
add ( half the coefficient of the x- term )² to x² + 2x
x² + 2(1)x + 1
= (x + 1)²
Thus
x² + 2x + 1 = (x + 1)² ← a perfect square
with c = 1
Ответ:
Espanol: La respuesta es 140 pies cúbicos.
English: the answer is 140 cubic feet.