Tolong dong kasih tau di jawab ya

a. (x+5)^ =x^+30
x^+25=x^+30
x=30+25
x=5
b. (x+4)(x+7)=(x+10)(x+3)
x2+28=x2+30
x2=30-28
x2=2
c. x2-9=x2+25
x2=25+9
x=34
d. 12x2-3=(4x-2)2
12x2-3=16x2+4
-3+4=16x2-12x2
-7=4x2
-7-4=x2
-11=x2.....