Question

5. Simplify the following expressions and evaluate them as directed:
2
/
and x
1
2
(i) x2(3 - 2x +x2) for x = 1; x = -1; x =
را در 0
(it) 5xy(3x + 4y – 7) – 3y(xy – x2 + 9) - 8 for x = 2, y = -1
dd the following:​

Answer 1

Answer:

850 4.25 after extraction DM 70mm