Using $(x + a) (x + b) = x^{2} + (a + b) x + a b$ , find $5.1 \times 5.2$

26.52

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

25.25

No worries! We‘ve got your back. Try BYJU‘S free classes today!

26.62

No worries! We‘ve got your back. Try BYJU‘S free classes today!

27.28

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $26.52$
$5.1 \times 5.2$
$= (5 + 0.1) (5 + 0.2)$
Using,
$(x + a) (x + b) = x^{2} + (a + b) x + a b$ we get,
$5^{2} + (0.1 + 0.2) 5 + 0.1 \times 0.2$
$= 25 + 1.5 + 0.2$
$= 26.52$

Suggest Corrections

Similar questions

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

5.1 * 5.2

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

103 \times 104

5.1 \times 5.2

103 \times 98

9.7 \times 9.8

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

5.1 \times 5.2

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

103 \times 104

Join BYJU'S Learning Program