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Ifx1;y2 find the values of the following expressions4x-3), + 5(ii)2+2(İİİ).xy+3y-9 |
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Answer» i) 4x - 3y + 5 = 4(1) - 3(2) + 5= 4 - 6 + 5= 9 - 6= 3.ii) x^2 + y^2= (1*1) + (2*2)= 1 + 4= 5.iii) xy + 3y - 9= 1(2) + 3(2) - 9= 2 + 6 - 9= 8 - 9= -1. |
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