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R . . V w l U i. a v w. v . Una It 3 A 1-
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R . . V w l U i. a v w. v . Una It 3 A 1-

R . . V w l U i. a v w. v . Una It 3 A 1--example-1
User Vishnu S Babu
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7x^2 + 21 = 0\\\\7x^2 = -21\\\\x^2 = -(21)/(7)\\\\x^2 = -3\\\\x = √(-3)\\\\\boxed{\bf{x = i√(3)}}\\\\\boxed{\bf{x=-i√(3)}}
User IWI
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