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Factorise:1. x2 -36 |
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Answer» x^2-36=(x)^2-(6)^2=(x+6)(x-6) By using algebraic identity, a² - b² = ( a + b ) ( a - b ) We find the factors. ************************ x² - 36 = x² - 6² = ( x + 6 ) ( x - 6 ) x^2*6^2(x + 6) (x - 6) x=6,-6 are the correct solutions X2-32x*x+8*-4(x+8)(x-4) (x+6)(x-6)=x2-36,x2-6x+6x-36 x*x=x^22*3*2*3=36this can be done By using identity2x²-36(x-6)²x²-2.x.6+6²(x-6)(x-6) x square - 36 x square - 6squarethe formula is a square - b square(a+b) (a-b) this answer is (X+6) (x-6) (a-b)=(a+b)(a-b)(x)^2 (6)^2(x-6) (x+6) (x-6)(x+6) is the correct answer h (x-6)² is the correct answer believe in scholr x^2-36(x)^2-(6)^2(x+6)(x-6) THANKS FOR ASKING QUESTIONS. x^2-36 =(x)^2-(6)^2=(x+6)(x-6) x²-36x³-6²(X+6)(x-6) we apply 3rd identity (a square - bsquare)so (x-6)(x+6) (A-B) (A+B) A=xB=6(X-6) (X+6) x²-36(x)² - (6)²(x+6) (x-6) by using identity a^2-b^2 = ( a+ b ) ( a - b )x^2-36x^2 - 6^2( x+6) ( x-6) solution (x+6)( x_6) (x+6)(x-6) is the answer a^2-b^2=*( a+b). (a-b) so this question answer is (x+6)(x-6) The correct answer is x-6 (x-6) (x+6) is right answer a²-b²=(a+b)(a-b) x²-6²(x+6)(x-6) This question answered by (6) =(x)² - (6)²= (x+6)(x-6) |
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