exam Maths Puzzle Numerical Ability

how do you solve 8y^2-12y+4=y+10

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exam Other Question

one watering system needs about 3 times as long to complete a job as another watering system.when both systems operate at the same time,the job can be completed in 9 mins.how long does it take each systemto do the job alone? I need this asap!! I'm trying to pass this class!!!

graph log 2(2x)

graph y = log2(x)

graph y=e^x and z=e^(2x)in the same window

graph y=log2(x)and z=log2(2x)in the sam