sstrike's answer to Michael Tan's Secondary 3 A Maths Singapore question.
Answer line 2 shouldn’t have a double equal on the same line
This saves writing a line but it is not the correct way of presenting the solution.
It is conceptually incorrect.
This saves writing a line but it is not the correct way of presenting the solution.
It is conceptually incorrect.
A=B=C
A=C
Can please elaborate more it is concept wrong? TIA
A=C
Can please elaborate more it is concept wrong? TIA
the property in the 3rd step is equality of surd, and thank you for the answer
sstrike that one is expansion I think (a-b)²=a²-2ab+b² they just never write properly
to Michael Tan "the property in the 3rd step is equality of surd, and thank you for the answer"
Yes
compare & match
Yes
compare & match
to Michael Tan "that one is expansion I think (a-b)²=a²-2ab+b² they just never write properly"
Can kindly pls indicate which part the expansion is not correct?
(10-q√6)² = 100 + 6q² - 20q√6
Thx
Can kindly pls indicate which part the expansion is not correct?
(10-q√6)² = 100 + 6q² - 20q√6
Thx
A=B=C
A=C is using the property of transitivity.
But in your working, it is simply expansion of B and using equality
And you have mixed the concepts in that steps
A=C is using the property of transitivity.
But in your working, it is simply expansion of B and using equality
And you have mixed the concepts in that steps
360 Tutoring Program