Advertisements
Advertisements
प्रश्न
Use the formula to multiply the following.
(a + 6) (a − 6)
Advertisements
उत्तर
It is known that, (a + b) (a − b) = a2 − b2.
(a + 6) (a − 6)
= (a)2 − (6)2
= a2 − 36
संबंधित प्रश्न
Find the following squares by suing the identities
(xy + 3z)2
Using identities, evaluate 1022
Using identities, evaluate 297 × 303
Expand `("x"+1/2)^2`
Factorise the following expressions
x2 + 14x + 49
(x2 + y2)(y2 + x2) = (x2 + y2)2
If a + b = 10 and ab = 18, find the value of a2 + b2
Simplify: (a + b)2 + (a – b)2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2abxy + b2y2
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:
- 2x2 + 6x + 4
- x2 + 4x + 4.
Factorise 2x2 + 6x + 4 by using the figure.
Calculate the area of figure.
