Question 2(vii)
Use the identity $(x + a) (x + b) = x^{2} + (a + b) x + a b$ to find the following products:
$(x y z - 4) (x y z - 2)$

Open in App

Solution

$(x y z - 4) (x y z - 2)$
$= (x y z)^{2} + (- 4 - 2) \times x y z + (- 4) \times (- 2)$ $[U s i n g i d e n t i t y (x + a) (x + b) = x^{2} + (a + b) x + a b]$
$= x^{2} y^{2} z^{2} - 6 x y z + 8$

Suggest Corrections

Similar questions

(x + a) (x + b) = x^{2} + (a + b) x + a b

(x + a) (x + b) = x^{2} + (a + b) x + a b

(x y z + 4) (x y z + 2)

Question 2(i)
Use the identity $(x + a) (x + b) = x^{2} + (a + b) x + a b$ to find the following products:
(x+3)(x+7)

Question 2(iv)
Use the identity $(x + a) (x + b) = x^{2} + (a + b) x + a b$ to find the following products:
$(4 x + 5) (4 x - 1)$

(x + a) (x + b) = x^{2} + (a + b) x + a b

Join BYJU'S Learning Program

Explore more

Join BYJU'S Learning Program