Advertisements
Advertisements
प्रश्न
Using identities, evaluate 297 × 303
Advertisements
उत्तर
297 × 303 = (300 − 3) × (300 + 3)
= (300)2 − (3)2 [(a + b) (a − b) = a2 − b2]
= 90000 − 9 = 89991
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
Use a suitable identity to get the following products.
(1.1m − 0.4) (1.1 m + 0.4)
Find the following squares by suing the identities
(0.4p − 0.5q)2
Use an expansion formula to find the value.
(997)2
Use the formula to multiply the following.
(a + 6) (a − 6)
Use the formula to find the value.
98 × 102
Use a formula to multiply of (x - 5)(x + 5).
(x2 + y2)(y2 + x2) = (x2 + y2)2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x3 + 2abx2 + b2x
Factorise the following.
y2 + 18x + 65
Factorise the following.
18 + 11x + x2
