Question

If a=5p , b=3q , the value of ( a+ b )² is _____. *

Answer 1

question

If a=5p , b=3q , the value of ( a+ b )² is _____. *

To find

( a+ b )² is _____. *

solution

substitute the values of a and b in (a+ b )²

$\boxed{ \boxed{ \sf identity \to( {a + b} )² = {a}^{2} + {b}^{2} + 2ab}}$

(5p+3q)²= 25p² + 9q²+30pq

______________________

MoRE IdEntiTieS!!

✏️(x + y)²= x² + y² + 2xy

✏️(x – y)²= x² + y²– 2xy

✏️x²– y² = (x + y) (x – y)

✏️(x + y)³= x³+ y³+ 3xy(x+y)

✏️(x + a) (x + b) = x² + (a + b)x + ab ; a and b are two constant values

✏️(x – y)³ = x³– y³– 3xy(x – y)

______________________