m²-7m-18=0 in quadratic
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Step-by-step explanation:
Which of the following are quadratic equations?
11 = -4x2-x3
ANSWER:
Given: 11 = – 4x2 – x3
On transposing all the terms of the right-hand side to the left-hand side, we get:
x3 + 4x2 + 11 = 0
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m² - 7m - 18 = 0
m² - 9m + 2m - 18 = 0
m ( m - 9 ) 2 ( m - 9 ) = 0
( m - 9 ) ( m + 2 ) = 0
m = 9 , - 2
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