Question

answer d questions
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Answer 1

Answer:

By spilliting the middle term -

y^2 - y - 3

y^2 - (2 + 1)y - 3

y^2 -2y - y - 3

y ( y - 1 ) - 1(-y + 3)

y(y-1) - 1 (3 -y)

4x^2 - 16x + 15

4x^2 - (1+15)x +15

4x^2 -x - 15x +15

x (4 - 1) - 15 (x - 1 )

Answer 2

Step-by-step explanation:

4 x square + 10 X + 6 X + 15=0

2x (2 X + 5 )+ 3 (2 X + 5 )=0

(2x + 3) (2x + 5)=0

x=-3/2 or x=-5/2