Finite Math Examples

t^{2} + 4 t + 4

$t^{2} + 4 t + 4$

Step 1

Rewrite

4

$4$ as

2^{2}

$2^{2}$ .

t^{2} + 4 t + 2^{2}

$t^{2} + 4 t + 2^{2}$

Step 2

Check that the middle term is two times the product of the numbers being squared in the first term and third term.

4 t = 2 \cdot t \cdot 2

$4 t = 2 \cdot t \cdot 2$

Step 3

Rewrite the polynomial.

t^{2} + 2 \cdot t \cdot 2 + 2^{2}

$t^{2} + 2 \cdot t \cdot 2 + 2^{2}$

Step 4

Factor using the perfect square trinomial rule

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

$a^{2} + 2 a b + b^{2} = {(a + b)}^{2}$ , where

a = t

$a = t$ and

b = 2

$b = 2$ .

{(t + 2)}^{2}

${(t + 2)}^{2}$

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