If 2 is a root of the equation x(2)+kx +12+0 and the equation x(2)+kx+q=0 has equal roots, find the value of q.
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2 is the root of eq. x²+kx+12= 0
so, x= 2
so , (2)² +2k+12=0
(k = -8)
now , x² +kx + q= 0
given that zero of this eq. are eq
so , b²- 4ac
( -8)² - 4×1×q
64 - 4q = 0
q= 16 ans..
so, x= 2
so , (2)² +2k+12=0
(k = -8)
now , x² +kx + q= 0
given that zero of this eq. are eq
so , b²- 4ac
( -8)² - 4×1×q
64 - 4q = 0
q= 16 ans..
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