Question

(x-1)^2 pleased explain
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Answer 1

❄️ Question :-

$\sf (x-1)^2$ - Expand it.

❄️ Solution :-

⭐ Using the algebraic identity :-

$\sf (a-b)^2=a^2+b^2-2ab$

$\pink \mapsto \sf (x-1)^2=(x)^2+(1)^2-2(x)(1)$

$\pink \mapsto \sf x^2+1-2x$

❄️ Know more :-

$\green \mapsto \sf (a+b)^2=a^2+b^2+2ab$

$\green \mapsto \sf (a-b)(a+b)=a^2-b^2$

$\green \mapsto \sf (x+a)(x+b)= {x}^{2} (a + b)x + ab$

Answer 2

Answer:

(x-1)².

(a -b)² = a² -2ab +b²

put the values.

(x)² -2(x) (-1) +(-1)².

x² +2x +1.= answer