Answer:
x^2- 10x -10x +100
x^2 -20x +100
x²−20x+100
Step-by-step explanation:
=(x+−10)(x+−10)
=(x)(x)+(x)(−10)+(−10)(x)+(−10)(−10)
=x²−10x−10x+100
=x²−20x+100
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