simplify (3-sqrt(t))^2

פתרון

simplify

(3 - t)^{2}

9 - 6 t + t

צעדי פתרון

(3 - t)^{2}

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

:הפעל נוסחת הכפל המקוצר

(3 - t)^{2} = 3^{2} - 2 \cdot 3 t + (t)^{2}

= 3^{2} - 2 \cdot 3 t + (t)^{2}

3^{2} = 9

- 2 \cdot 3 t = - 6 t

(t)^{2} = t

= 9 - 6 t + t

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