help help i am in a exam write in a ppapper and sent god will save you
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Question:51
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= 3x² - 12xy + 15xz - 8x² + 12xy - 40xz
= 3x² - 8x² - 12xy + 12xy + 15xz - 40xz
= 5x² + 0 - 25xz
= 5x² - 25xz
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1
Answer:
4x(2x-3y+10z)-[3x(x-4y+5z)]
=(8x²-12xy+40xz)-(3x²+12xy-15xz)
=(8x²-3x²)(-12xy-12xy)(40xz+15xz)
=5x²-24xy+55xz.
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