Dear student, 4a) factorise: 812a+b2-25a-2b2=92a+b2-5a-2b2=18a+9b2-5a-10b2using identity a2-b2=a+b×a-b=18a+9b+5a-10b×18a+9b-5a+10b=23a-b13a+19b Regards

Answer 4(a) question

Answer 4(a) question FEtrmse-, of a t n angle In figure, the bisectors of Z P and ZQ rneeT at a point If find the measure of

Dear student,

4 a) f a c t o r i s e : 81 {(2 a + b)}^{2} - 25 {(a - 2 b)}^{2} = {\{9 (2 a + b)\}}^{2} - {\{5 (a - 2 b)\}}^{2} = {(18 a + 9 b)}^{2} - {(5 a - 10 b)}^{2} u \sin g i d e n t i t y a^{2} - b^{2} = (a + b) \times (a - b) = \{18 a + 9 b + 5 a - 10 b\} \times \{18 a + 9 b - 5 a + 10 b\} = (23 a - b) (13 a + 19 b)

Regards

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Answer 4(a) question Answer 4(a) question FEtrmse-, of a t n angle In figure, the bisectors of Z P and ZQ rneeT at a point If find the measure of

Answer 4(a) question

Answer 4(a) question FEtrmse-, of a t n angle In figure, the bisectors of Z P and ZQ rneeT at a point If find the measure of