Whakaoti i te 45*45-2(45)(45)+15*15/45*45+2(45)(15)+15*15

$$\frac { 45 \times 45 - 2 ( 45 ) ( 45 ) + 15 \times 15 } { 45 \times 45 + 2 ( 45 ) ( 15 ) + 15 \times 15 }$$

Aromātai

$$-\frac{1}{2}=-0.5$$

Ngā Upane Otinga

Whakareatia te 45 ki te 45, ka 2025.

$$\frac{2025-2\times 45\times 45+15\times 15}{45\times 45+2\times 45\times 15+15\times 15}$$

Whakareatia te 2 ki te 45, ka 90.

$$\frac{2025-90\times 45+15\times 15}{45\times 45+2\times 45\times 15+15\times 15}$$

Whakareatia te 90 ki te 45, ka 4050.

$$\frac{2025-4050+15\times 15}{45\times 45+2\times 45\times 15+15\times 15}$$

Tangohia te 4050 i te 2025, ka -2025.

$$\frac{-2025+15\times 15}{45\times 45+2\times 45\times 15+15\times 15}$$

Whakareatia te 15 ki te 15, ka 225.

$$\frac{-2025+225}{45\times 45+2\times 45\times 15+15\times 15}$$

Tāpirihia te -2025 ki te 225, ka -1800.

$$\frac{-1800}{45\times 45+2\times 45\times 15+15\times 15}$$

Whakareatia te 45 ki te 45, ka 2025. Whakareatia te 2 ki te 45, ka 90. Whakareatia te 15 ki te 15, ka 225.

$$\frac{-1800}{2025+90\times 15+225}$$

Whakareatia te 90 ki te 15, ka 1350.

$$\frac{-1800}{2025+1350+225}$$

Tāpirihia te 2025 ki te 1350, ka 3375.

$$\frac{-1800}{3375+225}$$

Tāpirihia te 3375 ki te 225, ka 3600.

$$\frac{-1800}{3600}$$

Whakahekea te hautanga \frac{-1800}{3600} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 1800.

$$-\frac{1}{2}$$

Tauwehe

$$-\frac{1}{2} = -0.5$$