Y^2 6y 135 =y^2 15y+9y 135 ∵ 135= 15 × 9 amp; 6= 15+9 amp; =y(y 15)+9(y 15) =(y 15)(y+9) ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Factorisation by Regrouping Terms

Factorise: y2...

Question

Factorise:

$y^{2} - 6 y - 135$

Open in App

Solution

$y^{2} - 6 y - 135 = y^{2} - 15 y + 9 y - 135 {\begin{matrix} ∵ - 135 = - 15 \times 9 - 6 = - 15 + 9 \end{matrix}} = y (y - 15) + 9 (y - 15) = (y - 15) (y + 9)$

Suggest Corrections

Similar questions

Factorise:
$y^{2} + 7 y - 144$

Factorise:
$y^{2} + 19 y + 60$

∠ P = 60^{\circ}

45^{\circ}, 135^{\circ}, 120^{\circ}

60^{\circ}, 120^{\circ}, 120^{\circ}

60^{\circ}, 135^{\circ}, 135^{\circ}

45^{\circ}, 135^{\circ}, 135^{\circ}

Join BYJU'S Learning Program