Question

Factorise 60x²-70x-30

Answer 1

SOLUTION :

TO FACTORISE

$\sf{}60 {x}^{2} - 70x - 30$

EVALUATION

$\sf{}60 {x}^{2} - 70x - 30$

$= \sf{}10(6 {x}^{2} - 7x - 3)$

$= \sf{}10(6 {x}^{2} - 9x + 2x - 3)$

$= \sf{}10 \bigg[ 3x(2x - 3) +1( 2x - 3)\bigg]$

$= \sf{}2 \times 5 \times (2x - 3)(3x + 1)$

FINAL ANSWER

$\sf{}60 {x}^{2} - 70x - 30$

$= \sf{}2 \times 5 \times (2x - 3)(3x + 1)$

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Answer 2

=> 60x² - 70x - 30

Take out common in all terms , we get ,

=> 10 ( 6x² - 7x - 3 )

=> 10 ( 6x² - 9x + 2x - 3 )

Again , take out common in all terms , we get ,

=> 10 [ 3x ( 2x - 3 ) + 1 ( 2x - 3 ) ]

=> 10 ( 2x - 3 ) ( 3x + 1 )