What is factor d^2-22d+121 ?

The solution to factor d^2-22d+121 is (d-11)^2

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factor d^2-22d+121

factor

d^{2} - 22 d + 121

(d - 11)^{2}

Solution steps

d^{2} - 22 d + 121

Rewrite in the form of

a^{2} + 2 ab + b^{2} :

121 = 1 1^{2}

- 22 d = - 2 d \cdot 11

= d^{2} - 2 d \cdot 11 + 1 1^{2}

Apply Perfect Square Formula:

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

d^{2} - 2 d \cdot 11 + 1 1^{2} = (d - 11)^{2}

= (d - 11)^{2}

2 x^{2} + 3 x + 15 = 0

y^{2} - 6 y + 8

2 < x + 7 < 5

14 k^{2} - 9 k - 18