Add: $5^{2} - a^{2}$ , ${7 x}^{2} - {8 a}^{2}$ , ${- 7 x}^{2} - {9 a}^{2}$

Open in App

Solution

$(25 - a^{2}) + (7 x^{2} - 8 a^{2}) + (- 7 x^{2} - 9 a^{2})$
$= 25 - a^{2} + 7 x^{2} - 8 a^{2} - 7 x^{2} - 9 a^{2}$
$= 25 - a^{2} - 17 a^{2}$ on simplification
$= 25 - 18 a^{2}$

Suggest Corrections

Similar questions

Find the product of $(x + 7 y) (7 x - y)$ .

(x + 7 y) (7 x - y)

The product of $(x + 7 y) a n d (7 x - y)$ is

p (x) = 2 x - 7 x^{2} + 8 + 6 x^{4}

p (x) = 2 x - 7 x^{2} + 8 + 6 x^{4}

Join BYJU'S Learning Program