1.which mathematical statement is correct?
A.(2×-y)(3×y)=6ײ-5×y+y²
B.(4×-5)(4×-5)=16ײ-40×+25
C.(3×-4)(2×+7)=6ײ-13×+28
D.(2×+5)²=4ײ+20×+25​


Sagot :

Answer:

B.

Step-by-step explanation:

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