find suitable identities. 95×103 and (-a+c)(-a+c)
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1. suitable identity: x^2+(a+b)x+ab
=(100-5)(100 +3)
=100*100+(3-5)100+(3*-5)
=10000-200-15
=9785(verified)
2.suitable identity:(a+b)^2
=(-a+c)^2
=-a^2+b^2+2*-a*b
=a^2 + b^2 -2ab
thnks for asking
hope it helps
=(100-5)(100 +3)
=100*100+(3-5)100+(3*-5)
=10000-200-15
=9785(verified)
2.suitable identity:(a+b)^2
=(-a+c)^2
=-a^2+b^2+2*-a*b
=a^2 + b^2 -2ab
thnks for asking
hope it helps
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