Question

EVALUATE :(1) : (5a -3b) square .(please provide steps)​

Answer 1

step by step explanation:-

(5a-3b)²

(5a)²+(3b)²-2×5a×3b

[(a-b)²=a²+b²-2ab]

25a²+9b²-30ab

Answer 2

Step-by-step explanation:

(a+b)²=a²+2ab+b²

(a+b)²=a²+2ab+b²(5a-3b)²=(5a)²+2×5a×3b+(3b)²

(a+b)²=a²+2ab+b²(5a-3b)²=(5a)²+2×5a×3b+(3b)²(5a+3b)²=25a²+30ab+9b²