Question

初一数学计算题，求解，要过程

5 *7.25平方 + 10*7.25*2.75 +5*2.75平方
因式分解，要过程

Answer 1

5x7,25²+10x7.25x2.75+5x2.75²
解：原式=（根号5x7.25）²+2x（根号5x7.25）x（根号5x2.75）+（根号5x2.75）²
=（根号5x7.25+根号5x2.75）²
=【根号5x（7.25+2.75）】²
=5x100
=500

Answer 2

解：原式=5×（7.25²+2×7.25×2.75+2.75²）
=5×（7.25+2.75）²
=5×10²=500

Answer 3

5 *7.25平方 + 10*7.25*2.75 +5*2.75平方
=5（7.25+2.75）平方
=5×10平方
=500

Answer 4

5*7.25^2+5*7.25*2.75+5*7.25*2.75+5*2.75^2=5*7.25(7.25+2.75)+5*2.75(7.25+2.75)=
(5*2.75+5*7.25)(7.25+2.75)

Answer 5

原式=5（7.25²+2×7.25×2.75+2.75²）
=5（7.25+2.75）²
=5×100
=500