Question

8n²-4 n - 180 = 0
middle tirm factorisation​

Answer 1

Step-by-step explanation:

4(2n^2-n-45)=0

2n^2-n-45=0

now split the middle term such that the product of the two numbers is 90

90=2*3*3*5=(9*10)

2n^2-10n+9n-45=0

2n(n-5)+9(n-5)=0

(2n+9)(n-5)=0

n=-9/2,5

hope it helps u

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Answer 2

Answer:

n=5 or n=-2/9

Step-by-step explanation:

8nsquare-4n-180=0

4(2nsquare-n-45)=0

(2nsquare-10n+9n-45)=0

2n(n-5)+9(n-5)=0

(2n+9)(n-5)=0

2n=-9. n-5=0

or, n=-2/9 OR. n=5