document.write( "Question 215257This question is from textbook Intermediate Algebra
\n" ); document.write( ": 5. Factor: xy + xz + wy +wz \n" ); document.write( "

Algebra.Com's Answer #162632 by RAY100(1637) $\"\"$ $\"About$

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xy+xz + wy+wz
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\n" ); document.write( "x(y+z) + w(y+z),,,,,This is often hard to see,,think of (y+z) =c,,,,then xc+wc = c(x+w),,,and subst back,,,(y+z)(x+w)
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\n" ); document.write( "(x+w) *(y+z)
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\n" ); document.write( "check,,,FOIL answer,,,xy +xz+wy +wz,,,,ok
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\n" ); document.write( "This is called \" grouping\" factoring
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