Advertisements
Advertisements
Question
Use a suitable identity to get the following products.
(− a + c) (− a + c)
Advertisements
Solution
(− a + c) (− a + c) = (− a + c)2
= (− a)2 + 2(− a) (c) + (c)2 [(a + b)2 = a2 + 2ab + b2]
= a2 − 2ac + c2
APPEARS IN
RELATED QUESTIONS
Find the following squares by suing the identities.
(6x2 − 5y)2
Find the following squares by suing the identities
(0.4p − 0.5q)2
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 103 × 104
Expand the following square, using suitable identities
(mn + 3p)2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 2x + 1
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2abxy + b2y2
The area of a circle is given by the expression πx2 + 6πx + 9π. Find the radius of the circle.
The height of a triangle is x4 + y4 and its base is 14xy. Find the area of the triangle.
If p + q = 12 and pq = 22, then find p2 + q2.
If a + b = 25 and a2 + b2 = 225, then find ab.
