Advertisements
Advertisements
प्रश्न
Simplify: (a + b)2 – 4ab
Advertisements
उत्तर
(a + b)2 – 4ab = a2 + b2 + 2ab – 4ab
= a2 + b2 – 2ab
= (a – b)2
APPEARS IN
संबंधित प्रश्न
Use an expansion formula to find the value.
(1005)2
Use the formula to find the value.
98 × 102
(x2 + y2)(y2 + x2) = (x2 + y2)2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
4x2 + 12x + 9
Factorise the following.
x2 + 9x + 20
Factorise the following.
p2 + 14p + 13
Factorise the following.
y2 + 7y + 12
The height of a triangle is x4 + y4 and its base is 14xy. Find the area of the triangle.
What should be added to 4c(– a + b + c) to obtain 3a(a + b + c) – 2b(a – b + c)?
Take suitable number of cards given in the adjoining diagram [G(x × x) representing x2, R(x × 1) representing x and Y(1 × 1) representing 1] to factorise the following expressions, by arranging the cards in the form of rectangles: x2 + 4x + 4. Factorise 2x2 + 6x + 4 by using the figure.
Calculate the area of figure.
