Question

(5m-3n)² = __-30mn + 9n²
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Answer 1

Answer:

25m^2

Step-by-step explanation:

${(a - b) }^{2} = {a}^{2} - 2ab + {b}^{2}$

So (5m)^2=25m^2

Answer 2

Answer:

25m²

Step-by-step explanation:

(5m-3n)²= (a-b)²=a²+b²-2ab= (5m)²+(3n)²-2x5mx3n=25m²+9n²-30mn

Therefore 25m² is the answer