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Class 9MathematicsExploring Algebraic IdentitiesVisual models of identitiesEasyLevel 72
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In the visual model of a square with side (a+b+c), how many times will the (bc) rectangle appear?

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Answer and explanation

Correct answer: Twice

Each different pair forms two equal rectangles, so (bc) appears twice. Exam tip: count paired rectangles.

Related tags

Three-Term-SquarePair-RectanglesVisual-Counting

Frequently asked questions

What is the correct answer to this question?

Twice

Why is this the correct answer?

Each different pair forms two equal rectangles, so (bc) appears twice. Exam tip: count paired rectangles.

Which subject and chapter does this question cover?

This is a Class 9 Mathematics question. Chapter: Exploring Algebraic Identities. Topic: Visual models of identities.

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10 more MCQs
  1. 1A square has side \(a+b\). Which identity is shown by its area model?
  2. 2A diagram has two small squares with sides \(a\) and \(b\) and two equal rectangles. What is the total area?
  3. 3If the side of a big square is \(x+3\), how will its area be written?
  4. 4A square has side \(a\). A corner square of \(b \times b\) is removed. The remaining area is related to which expression?
  5. 5In a visual model \(a^2-b^2\) is rearranged into two rectangles. Which factorisation does it show?
  6. 6What is the area of a square with side \(a-b\)?
  7. 7In a diagram two \(a \times b\) rectangles are subtracted from a big \(a \times a\) square and a \(b \times b\) square is added back. Which identity is formed?
  8. 8What is the area of a rectangle with length \(x+2\) and breadth \(x+5\) in visual form?
  9. 9In a tile model there is one \(x^2\) tile and \(8\) \(x\)-tiles. If there are \(16\) constant tiles then the complete square models what?
  10. 10If in a square model the total area of the two middle rectangles is \(10x\) and the small square area is \(25\), what is the side?
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