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4 minutes ago, MSU said:

It doesn't get better from that. My joy last week was:

Simplify and then graph (x + 3)(x + 5).

What’s the answer? (I’ve tried substituting x for a number but then the formula doesn’t make sense).

52 years since I did my maths O grade and I don’t think I’ve ever had to use algebra irl.

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5 hours ago, Mark Connolly said:

Multiply out the brackets to get y=x2  + 8x + 15, then it's a parabola?

Yeah, it all came back to me eventually, although the graphing bit was keen to establish the bits where the line broke the x and y axis which meant substituting 0 in for x and y, so y = 15 and x = -3 and -5. It all seemed a bit much. It got worse where you had to do it the other way round and get equation back to the wee brackety jobbies.

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10 hours ago, MSU said:

It doesn't get better from that. My joy last week was:

Simplify and then graph (x + 3)(x + 5).

IMG_0653.jpeg.f5892aabb3ce8c0fe61f20cd57708bf5.jpeg
 

The tests I took in the ‘80’s were pencil and paper…the same tests now are allowing graphing calculators…

Edited by TxRover
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16 hours ago, MSU said:

It doesn't get better from that. My joy last week was:

Simplify and then graph (x + 3)(x + 5).

“You won’t learn anything if I do it for you.”” How do you think you do it?/ what did the teacher say?”

never admit to not knowing, it weakens your authority 

 

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2 hours ago, coprolite said:

“You won’t learn anything if I do it for you.”” How do you think you do it?/ what did the teacher say?”

never admit to not knowing, it weakens your authority 

 

I used to try to help, but got "that's no' the way the teacher showed us"!

The reply was, "Why don't  you and your teacher go and throw shite at each other? Do it yourself then".

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