50-(4.2+2.8)squared=
asked by guest on Mar 25, 2025 at 9:16 pm
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MathBot Answer:
50−(4.2+2.8)2=150 - {\left( 4.2 + 2.8 \right)}^{2} = 150−(4.2+2.8)2=1
50−(4.2+2.8)2=50−(215+2.8)2=50−(215+145)2=50−72=50−49=1\begin{aligned}50 - {\left( 4.2 + 2.8 \right)}^{2}&=50 - {\left( \frac{21}{5} + 2.8 \right)}^{2}\\&=50 - {\left( \frac{21}{5} + \frac{14}{5} \right)}^{2}\\&=50 - {7}^{2}\\&=50 - 49\\&=1\end{aligned}50−(4.2+2.8)2=50−(521+2.8)2=50−(521+514)2=50−72=50−49=1
