Question

Substract (3x² - 2 ²)

I need step by step explanation

plz answer me fast I will mark you brainliest.

​

Answer 1

Step-by-step explanation:

(3x²-2²)

3x²-4 =0

3x²= 4

x²= 4/3

x = √4/3

Answer 2

ANSWER :-

$9x^2-12x+4$

QUESTION:-

SUBTRACT:- $(3x^2-2^2)$

TO FIND:-

THE VALUE

EXPLANATION:-

$(3x^2-2^2)$ can be written as $(3x-2)^2$ (using exponent law $(a^m-b^m)=(a-b)^m$

$(3x-2)^2=(3x)^2-2(3x)(2)+(2)^2$    (using identity $((a-b)^2=a^2-2ab+b^2)$

==>$9x^2-12x+4$

HOPE U UNDERSTAND THIS :-)

MORE INFORMATION

ALGEBRAIC IDENTITIES:-

1) $(a+b)^2=a^2+2ab+b^2$

2) $(a-b)^2=a^2-2ab+b^2$

3)$(a+b)(a-b)=a^-b^2$

4) $(x+a)(x+b)=x^2+(a+b)x+ab$