Advertisements
Advertisements
प्रश्न
Find the value of a, if 8a = 352 – 272
Advertisements
उत्तर
We have,
8a = 352 – 272
⇒ 8a = (35 + 27)(35 – 27) ...[Using the identity, a2 – b2 = (a + b)(a – b)]
⇒ 8a = 62 × 8
⇒ `a = (62 xx 8)/8`
⇒ a = 62
APPEARS IN
संबंधित प्रश्न
Factorise the following expressions
m2 + m – 72
Factorise the following algebraic expression by using the identity a2 – b2 = (a + b)(a – b)
z2 – 16
The value of p for 512 – 492 = 100p is 2.
Using suitable identities, evaluate the following.
9.8 × 10.2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
9x2 – 1
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
49x2 – 36y2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
a4 – (a – b)4
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
y4 – 625
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
p5 – 16p
Verify the following:
(a + b + c)(a2 + b2 + c2 – ab – bc – ca) = a3 + b3 + c3 – 3abc
