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Q.17. Find the value of a and b for the following algebraic expressions.
(a) m 2 - a m + 10 = m - b m - 5
(b) a z 2 + 10 z - 75 = z + b 5 z - 15
 

Dear student
am2-am+10=m-bm-5Consider, RHSm-bm-5=m2-5m-bm+5b=m2-5+bm+5bOn comparing with LHS , we geta=5+b and 5b=10a=5+2       b=2a=7 and b=2 baz2+10z-75=z+b5z-15Consider, RHSz+b5z-15=5z2-15z+5bz-15b=5z2+5b-15z-15bOn comparing with LHS , we geta=5 and -15b=-75b=5
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