Evaluate (3x-2y+5z+7w)(2y+5z-3x+7w)
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Answered by
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(3x-2y+5z+7w)(2y+5z-3x+7w)
=6xy+15xz-9x²+21xw-4y²-10yz+6xy-14wy+10zy+25z²-15xz+35zw+14yw+35zw-21xw+49w²
=-9x ²-4y²+25z²+49w²+6xy+6xy+15xz-15xz+21xw-21xw-10yz+10zy-14wy+14wy+35zw+35zw
=-9x²-4y²+25z²+49w²+12xy+70zw
=25z²+49w²-9x²-4y²+12xy+70zw
HOPE U CAN UNDERSTAND
PLS MARK IT AS BRAINLIEST
=6xy+15xz-9x²+21xw-4y²-10yz+6xy-14wy+10zy+25z²-15xz+35zw+14yw+35zw-21xw+49w²
=-9x ²-4y²+25z²+49w²+6xy+6xy+15xz-15xz+21xw-21xw-10yz+10zy-14wy+14wy+35zw+35zw
=-9x²-4y²+25z²+49w²+12xy+70zw
=25z²+49w²-9x²-4y²+12xy+70zw
HOPE U CAN UNDERSTAND
PLS MARK IT AS BRAINLIEST
mysticd:
We can use (a+b)(a-b)= a^2-b^2 identity
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2
If correct then mark it as brainliest
Attachments:
It is lengthy process
Hmm yes bt I had done for your understanding
We can use identities
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