J’ai besoin d’aide s’il vous plaît merci beaucoup d’avance✨.... Pergunta de ideia deangelielachica55

angelielachica55 @angelielachica55

June 2021 1 118 Report

J’ai besoin d’aide s’il vous plaît merci beaucoup d’avance✨

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hugoLPR74

1.

grand rectangle :

$7*(3+a)$

petit carré :

$a^{2}$

somme rectangle + carré

$7*(3+a)+a^{2}$

réduction :

$7(3+a)+a^{2}\\73+7*a+a^{2} \\21+7a+a^{2}$

2.

exemple de décomposition :

$2b(b+1)\\2b*b+2b*1\\2b^{2} +2b\\b^{2} +b^{2}+ 2b$

voir document ci-joint

3.

$P=2(p+1.5+3)\\P=2*p+2*1.5+2*3\\P=2p+3+6\\P=2p+9\\A=3(p+1.5)\\A=3*p+3*1.5\\A=3p+4.5$

$P=2(2+7)-7+\pi \frac{7}{2} \\P=2*2+2*7-7+\pi \frac{7}{2} \\P=4+7+3.5\pi \\P=11+3.5\pi \\A=\frac{1}{2} *\pi \frac{7}{2} ^{2} +7*2\\A=\frac{1}{2} 12.25\pi +14\\A=6.125\pi +14$

$P=d+d+d+d+d+d+c+c+x+x\\P=6d+2x+2c\\A=x(d+d+d)+d*c\\A=3dx+cd$

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1.

$7(3+a)+a^{2}\\73+7*a+a^{2} \\21+7a+a^{2}$

2.

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