Question

Factorise: 60a^2-70a-30. ​

Answer 1

Answer:

60a² - 70a - 30 = 0

6a²- 7a - 3 = 0

6a²- 9a + 2a -3 = 0

3a( 2a - 3) +1 (2a - 3) = 0

(3a+1) (2a-3) = 0

a = -1/3 , 3/2

Answer 2

Answer:

TO FACTORISE

\sf{}60 {x}^{2} - 70x - 3060x

2

−70x−30

EVALUATION

\sf{}60 {x}^{2} - 70x - 3060x

2

−70x−30

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

2

−7x−3)

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

2

−9x+2x−3)

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

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

FINAL ANSWER

\sf{}60 {x}^{2} - 70x - 3060x

2

−70x−30

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

Step-by-step explanation:

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