Analysis of errors on topics

This page shows user's errors regarding topics. Four performed tasks are analysed jointly. Observe that the main errors stem from solving rational equations; the recommended exercise focuses on this topic.

Analysis: topics - All performed tasks

Contents

	Table
	Plot
	Methodical recommendations:

Methodical recommendations:

Perform the task

Rational equations

Quadratic equations

Equations. Method of substitution. Grouping method

Solve the equation

{(- 40 y^{2} + 26 y - 3)}^{2} + {(20 y^{2} - 13 y + 6)}^{2} = {(- 20 y^{2} + 13 y - 2)}^{2} + 2 \cdot (20 y^{2} - 13 y + 6) \cdot (- 40 y^{2} + 26 y - 3)

Solve the problem with the following technique(s)

Scheme "To relate categories with the step 7"

Table

N	Theme, chapter, section	Errors:	Hints:	Total:
0	Rational equations Quadratic equations Equations. Method of substitution. Grouping method	22	32	54
1	Rational equations Quadratic equations Equations. Grouping method	27	9	36
2	Rational equations Fractional algebraic equations Fractional algebraic equations reduced to linear equations	14	9	23
3	Rational inequalities Strict linear inequalities Strict linear inequalities. Factorization of quadratic trinomial	7	9	16

Plot

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