InterviewSolution
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InterviewSolution
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Factorise the expressions:(i) lx2 + mx(ii) 7y2 + 35Z2(iii) 3x4 + 6x3y + 9x2Z |
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Answer» (i) lx2 + mx = lx2 + mx = l × x × x + m × x = x(lx + m) (ii) 7y2 + 35z2 = 7y2+ 35z2 = 7 × y2 + 7 × 5 × z2 = 7(y2 + 5z2) (iii) 3x4 + 6x3y + 9x2Z = 3x4 + 6x3y + 9x2Z = 3 × x2 × x2 + 3 × 2 × x × x2 × y + 3 × 3 × x2 × z = 3x2 (x2 + 2xy + 3z) |
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