Question

Write down the squares of:
1. (i) 2t +9
(ii) p +5
(iii) (2 y² +5z²)
(iv)5c + 2d
explain me please don't give wrong answer for points​

Answer 1

Answer:

4] Solution: square of 5c + 2d will be written as (5c + 2d)^2. One solving,

we obtain, (5c +2d) x (5c + 2d) = 5c x 5c + 5c x 2d + 2d x 5c + 2d x 2d = 25c^2 + 10cd + 10cd + 4d^2 = 25c^2 + 4d^2 + 20cd.

1] ( 2t + 9)square

(a +b )*2

a^2+b^2+2ab

4t^2+81+36t

2] Answer:

p²+10p+25

Step-by-step explanation:

(p+5)²

p²+2×(5)×(p)+5²

p²+10p+25

3]

using identity

put x=2y2 and y=5z2

we get

(2y2)2+ (5z2)2+2(2y2)(5z2)

4y4+25z4+20y2z2

so the square is

4y4+25z4+20y2z2

HOPE IT HELPS YOU

Answer 2

Answer:

is explain below

Step-by-step explanation:

1. (i) (2t+9)²

=2t²+36t+81

(ii) (p+5)²

= p²+10p+25

(iii) [(2y²+5z²)]²

= 4y⁴+20y²z²+25z⁴

(iv) (5c+2d)²

= 25c²+20cd+4d²

i have used a²+2ab+b²=(a+b)² this identity

it will help and plz rate my ans