Advertisements
Advertisements
प्रश्न
Use a formula to multiply of (4z – 5y)(4z + 5y)
योग
Advertisements
उत्तर
We use the formula:
(x − a)(x + a) = x2 − a2
(4z – 5y)(4z + 5y)
= (4z)2 − (5y)2
= 16z2 − 25y2
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 15.5: Miscellaneous Problems : Set 2 - Exercise [पृष्ठ १००]
APPEARS IN
संबंधित प्रश्न
Use a suitable identity to get the following products.
(a2 + b2) (− a2 + b2)
Simplify (7m − 8n)2 + (7m + 8n)2
Simplify (2.5p − 1.5q)2 − (1.5p − 2.5q)2
Using identities, evaluate 78 × 82
Which of the options given below is the square of the binomial `(8-1/"x")`?
Use the formula to find the value.
97 × 103
Use a formula to multiply of (2a – 13)(2a + 13)
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2abx + b2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2abxy + b2y2
Factorise the following.
x2 + 9x + 20
