MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Algebraic Identities (a-b)³

Question 1iii...

Question

Question 1(iii)
Multiply the binomials:
(2.5l-0.5m) and ( 2.5l+0.5m)

Open in App

Solution

$(2.5 l - 0.5 m) \times (2.5 l + 0.5 m) = 2.5 l \times (2.5 l + 0.5 m) - 0.5 m \times (2.5 l + 0.5 m)$
$= 2.5 l \times 2.5 l + 2.5 l \times 0.5 m - 0.5 m \times 2.5 l - 0.5 m \times 0.5 m$ $= 6.25 l^{2} + 1.25 l m - 1.25 l m - 0.25 m^{2}$
$= 6.25 l^{2} - 0.25 m^{2}$

Suggest Corrections

thumbs-up

2

Similar questions

Q. Multiply the binomials:
(2.5l - 0.5m) and (2.5l + 0.5m)

Q. Multiply the binomials

(2.5 l - 0.5 m)

(2.5 l + 0.5 m)

(2.5 l - 0.5 m)

(2.5 l + 0.5 m)

Q. Multiply the binomials
(i)

(2 x + 5)

(4 x - 3)

(y - 8)

(3 y - 4)

(2.5 l - 0.5 m)

(2.5 l + 0.5 m)

(a + 3 b)

(x + 5)

(2 p q + 3 q^{2})

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

(\begin{matrix} \frac{3}{4} a^{2} + 3 b^{2} \end{matrix})

(\begin{matrix} a^{2} - \frac{2}{3} b^{2} \end{matrix})

Multiply the binomials.

(i)(2x + 5) and(4x − 3) (ii) (y − 8) and (3y −4)

(iii)(2.5l −0.5m) and (2.5l + 0.5m)

(iv) (a + 3b)and (x + 5)

(v)(2pq + 3q²)and (3pq − 2q²)

(vi) $(\frac{3}{4} a^{2} + 3 b^{2})$ and $4 (a^{2} - \frac{2}{3} b^{2})$

View More

Join BYJU'S Learning Program

explore_more_icon

Explore more

Algebraic Identities (a-b)³

Standard VIII Mathematics

Join BYJU'S Learning Program

CrossIcon