If M - N = 0.9 and Mn = 0.36, Find: M2 - N2. - Mathematics

If m - n = 0.9 and mn = 0.36, find:
m² - n².

योग

m² - n²
= (m + n)(m - n)
= (±1.5)(0.9)
= ±1.35.

shaalaa.com

क्या इस प्रश्न या उत्तर में कोई त्रुटि है?

अध्याय 4: Expansions - Exercise 4.1

अध्याय 4 Expansions
Exercise 4.1 | Q 13.2

If x + y + z = 0, show that x³ + y³ + z³ = 3xyz.

Simplify the following:

0.76 x 0.76 - 2 x 0.76 x 0.24 x 0.24 + 0.24

Write in the expand form: `(2x - y + z)^2`

Find the value of 27x³ + 8y³, if 3x + 2y = 20 and xy = \[\frac{14}{9}\]

If \[\frac{a}{b} + \frac{b}{a} = 1\] then a³ + b³ =

Use identities to evaluate : (97)²

Expand the following:
(3x + 4) (2x - 1)

Evaluate the following without multiplying:
(103)²

Using suitable identity, evaluate the following:

103³

Factorise the following:

16x² + 4y² + 9z² – 16xy – 12yz + 24xz