Question 215257This question is from textbook Intermediate Algebra
: 5. Factor: xy + xz + wy +wz
This question is from textbook Intermediate Algebra
Answer by RAY100(1637)   (Show Source):
You can put this solution on YOUR website! xy+xz + wy+wz
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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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(x+w) *(y+z)
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check,,,FOIL answer,,,xy +xz+wy +wz,,,,ok
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This is called " grouping" factoring
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