completing the square Show 6+2y-y² = p-(q-y)²?
Show 6+2y-y² = p-(q-y)²
Please show all your workings,
Thankyou inadvance
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Show 6+2y-y² = p-(q-y)²
Please show all your workings,
Thankyou inadvance
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Answers & Comments
6 + 2y - y ² = p - ( q ² - 2 qy + y ² )
6 + 2y - y ² = p - q ² + 2qy - y ²
6 = p - q ²
2 = 2q
q = 1
p = 5
6+2y-y²
= -y² + 2y +6
=(- y²+ 2y - 1) +6 +1
=-(y²- 2y + 1) +7
=-(y-1)² +7
=7 - (y-1)²