Answer:
15/10L (1.5)L
Step-by-step explanation:
on the picture
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x(x-1)(x+1)(x²+1)=0
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question no:3
here
= x^2 + 5x - 300
= x^2 +(20-15)x -300
= x^2 + 20x - 15x - 300
= x(x+20) -15(x+20)
= (x+20) (x - 15)