Question

$(x + 4)(x + 10 - 5y$
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Answer 1

=> (x+4)(x+10-5y)

=> x(x+10-5y)+4(x+10-5y)

=> x²+10x-5xy+4x+40-20y

=> x²+14x-5xy-20y+40

I hope it will help you please give thanks