Question

SECTION - B (14 X 5 = 70)
6. Factorise: 2x -3x--17x +30.
7. The cost of a toy horse is same as that of cost of 3 balls.
Express this statement as a linear equation in two variables
Also draw its graph.
8. State Euclid's first postulate
9. If the ratio between two complementary angles is 2:3 then find
the angles
10. The angles of a triangle are in the ratio 3:7:8 Find the angles
of the triangle
11. Factorise: X-Y​

Answer 1

Answer:

6.We factor.

2x2−17x+30=0

2x2−12x−5x+30=0

2x(x−6)−5(x−6)=0

(2x−5)(x−6)=0

So,

x=52,6.

Step-by-step explanation:

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