solve the question mark with pencil please step by step
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Step-by-step explanation:
(i) 3(n*n) + 10n + 7 = 0
3(n*n) + 7n + 3n + 7 = 0
n( 3n + 7 ) +1 (3n + 7) = 0
( n+1 )(3n+7 ) = 0
(ii)4(r*r) -7r + 3= 0
4r*r -3r -4r +3 = 0
r(4r - 3) -1(4r-3) = 0
(r-1)(4r-3) = 0
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