The Total solution for NCERT class 6-12
Answer - 1 : -
Answer - 2 : -
Answer - 3 : -
Answer - 4 : -
Answer - 5 : -
2y2 + 3y2 +y – 3= 2 x (-1)2 + 3(-1)2 + (-1) – 3= 2 x 1 + 3 x 1 – 1 – 3= 2 + 3 – 4= 5 – 4= 1
Answer - 6 : -
4(-2)3 –2(-2) x 2 x 1 + 3 x 2 x 1 + (2)3= 4(-8) + 8 + 6 + 4= -32 + 8 + 6 + 4= -32 + 18= -14
Answer - 7 : - (i) (a + b)2 = a2 + 2ab + b2(a + b)2 = a2 + 2ab + b2 में a और b का मान रखने पर(3 + 2)2 = (3)2 + 2 x 3 x 2 + (2)2(5)2 = 9 + 12 + 425 = 25L.H.S. = R.H.S.