Find the product of
$(2 a - 5) (2 a + 5) (2 a - 3)$

Open in App

Solution

$(2 a - 5) (2 a + 5) (2 a - 3)$

$= [2 a + (- 5) [2 a + 5] [2 a + (- 3)]]$

$= (2 a)^{3} + (- 5 + 5 - 3) (2 a)^{2} + [(- 5) (5) + (5) (- 3) + (- 3) (- 5)] (2 a) + (- 5) (5) (- 3)$

$= 8 a^{3} + (- 3) 4 a^{2} + (- 25 - 15 + 15) 2 a + 75$

$= 8 a^{3} - 12 a^{2} - 50 a + 75$

Suggest Corrections

Similar questions

Factorise : $(2 a + b)^{2} + 5 (2 a + b) + 6$

(2 a + 3 b)^{2} - 5 (2 a + 3 b) - 14

28 a^{3} b^{3} c^{3} \div 52 a b^{2} c^{3}

(2 a + b)^{2} + 5 (2 a + b) + 6

(2 a + b + 3) (2 a + b + 2)

1

0

Using identity $(x - a) (x + a) =$ $x^{2} - a^{2}$ , find $6^{2} - 5^{2}$ .

Join BYJU'S Learning Program