Saved Bookmarks
| 1. |
Find the following product using suitable identities. Mention the identities used i) Square of (x+0.09) ii) (0.2+0.3)(0.2−0.3) iii)(2z²-9)(2z²+6) iv) 10.5×9.5 v) 104² vi)999² vii) 61²-60² viii) 113×102 plz don't spam answer with full steps plz solve these |
|
Answer» question(a + b)2 = a2 + 2AB + b2 (a – b)2 = a2 – 2ab + b2 (a – b)(a + b) = a2 – b21) This question can be solved using the first identify(x + 3) (x + 3) =x2 + 6x + 92) This question can be solved using the first identify(2y + 5) (2y + 5)=4y2 + 20y + 253) This question can be solved using the SECOND identify(2a – 7) (2a – 7) = 4a2 – 28a + 49 4) This question can be solved using the second identify (3A-1/2)(3a-1/2)= 9a2 -3a+(1/4)5) This question can be solved using the third IDENTITY(1.1m – 0.4) (1.1m + 0.4)= 1.21m2 – 0.165) This question can be solved using the third identity(a2+ b2) (– a2+ b2)= (b2 + a2 ) (b2 – a2)= a4 - b46) This question can be solved using the third identity(6x – 7) (6x + 7)=36x2 - 497) This question can be solved using the third identity= c2 - a28) This question can be solved using the first identity[ (x/2)+(3y/4)] [ (x/2)+(3y/4)]=(x2/4) + (9y2/16) +(3xy/4)9) This question can be solved using second identity= 49a2 – 126ab + 81b2 |
|