Ex.9.3 Q2 Algebraic Expressions and Identities - NCERT Maths Class 8

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Question

Complete the table

---

First expression

Second Expression

Product

(i)

\(a\)

\(b + c + d\)

---

(ii)

\(x + y - 5\)

\(5xy\)

---

(iii)

\(p\)

\(6{p^2} - 7p + 5\)

---

(iv)

\(4{p^2}{q^2}\)

\({p^2} - {q^2}\)

---

(v)

\(a + b + c\)

\(abc\)

---

Text Solution

What is known?

Expressions

What is unknown?

Product

Steps:

The table can be completed as follows.

---

First expression

Second Expression

Product

(i)

\(a\)

\(b + c + d\)

\(ab + ac + ad\)

(ii)

\(x + y - 5\)

\(5xy\)

\(5{x^2}y + 5x{y^2} - 25xy\)

(iii)

\(p\)

\(6{p^2} - 7p + 5\)

\(6{p^3} - 7{p^2} + 5p\)

(iv)

\(4{p^2}{q^2}\)

\({p^2} - {q^2}\)

\(4{p^4}{q^2} - 4{p^2}{q^4}\)

(v)

\(a + b + c\)

\(abc\)

\({a^2}bc + a{b^2}c + ab{c^2}\)

  
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