\(e,\left(5x+1\right)^2\\ =25x^2+10x+1\\ f,\left(2x+3\right)^2\\ =4x^2+12x+9\\ g,\left(2x-1\right)^2\\ =4x^2-4x+1\\ h,\left(3x-2\right)^2\\ =9x^2-12x+4\)
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\(e,(5x+1)^2=(5x)^2+2 \cdot 5x \cdot 1 +1 ^2\)
\(=25x^2+10x+1\)
\(f,(2x+3)^2=(2x)^2+2\cdot 2x \cdot 3 +3^2\)
\(=4x^2+12x+9\)
\(g,(2x-1)^2=(2x)^2-2\cdot2x\cdot1+1^2\)
\(=4x^2-4x+1\)
\(h,(3x-2)^2=(3x)^2-2\cdot3x\cdot2 + 2^2\)
\(=9x^2-12x+4\)
#\(Toru\)
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