(i) a2 \(\times\) (2a22) \(\times\) (4a26)
= (2 \(\times\) 4) ( a2 \(\times\) a22 \(\times\) a26 )
= 8 \(\times\) a2 + 22 + 26
= 8a50
(ii) (\(\frac{2xy}{3}\)) \(\times\) (\(\frac{-9x^2y^2}{10}\))
=(\(\frac{2}{3}\) \(\times\) \(\frac{-9}{10}\) ) ( x \(\times\) x2 \(\times\) y \(\times\) y2 )
= (\(\frac{-3}{5}\) x3y3)
(iii) (\(\frac{-10pq^3}{3}\)) \(\times\)(\(\frac{6p^3q}{5}\))
= ( \(\frac{-10}{3}\) \(\times\) \(\frac{6}{5}\) ) (p \(\times\) p3\(\times\) q3 \(\times\) q)
= (-4p4q4)
(iv) ( x) \(\times\) (x2) \(\times\) (x3) \(\times\) (x4)
= x 1 + 2 + 3 + 4
= x10
| First expression | Second expression | Product |
---|---|---|---|
(i) | a | b + c + d | … |
(ii) | x + y – 5 | 5xy | … |
(iii) | p | 6p 2 – 7p + 5 | … |
(iv) | 4p 2q 2 | p 2 – q 2 | … |
(v) | a + b + c | abc | … |
Fill in the blanks using the correct form of the verbs in brackets.
My little sister is very naughty. When she ____ (come) back from school yesterday, she had _____(tear) her dress. We _____(ask) her how it had _____(happen). She ______(say) she _____ _____ (have, quarrel) with a boy. She _____ _____ (have, beat) him in a race and he _____ ____ (have, try) to push her. She _____ ____ (have, tell) the teacher and so he _____ _____ (have, chase) her, and she _____ _____ (have, fall) down and _____ _____ (have, tear) her dress.