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16a^{2}-40ab+25b^{2}+\left(4a+5b\right)^{2}
Usar teorema binomial \left(p-q\right)^{2}=p^{2}-2pq+q^{2} para expandir \left(4a-5b\right)^{2}.
16a^{2}-40ab+25b^{2}+16a^{2}+40ab+25b^{2}
Usar teorema binomial \left(p+q\right)^{2}=p^{2}+2pq+q^{2} para expandir \left(4a+5b\right)^{2}.
32a^{2}-40ab+25b^{2}+40ab+25b^{2}
Combina 16a^{2} e 16a^{2} para obter 32a^{2}.
32a^{2}+25b^{2}+25b^{2}
Combina -40ab e 40ab para obter 0.
32a^{2}+50b^{2}
Combina 25b^{2} e 25b^{2} para obter 50b^{2}.
16a^{2}-40ab+25b^{2}+\left(4a+5b\right)^{2}
Usar teorema binomial \left(p-q\right)^{2}=p^{2}-2pq+q^{2} para expandir \left(4a-5b\right)^{2}.
16a^{2}-40ab+25b^{2}+16a^{2}+40ab+25b^{2}
Usar teorema binomial \left(p+q\right)^{2}=p^{2}+2pq+q^{2} para expandir \left(4a+5b\right)^{2}.
32a^{2}-40ab+25b^{2}+40ab+25b^{2}
Combina 16a^{2} e 16a^{2} para obter 32a^{2}.
32a^{2}+25b^{2}+25b^{2}
Combina -40ab e 40ab para obter 0.
32a^{2}+50b^{2}
Combina 25b^{2} e 25b^{2} para obter 50b^{2}.